Terminal device, base station device, communication method, and program

ABSTRACT

[Object] To enable further improving whole system transmission efficiency in a communication system in which the base station device and the terminal device communicate. 
     [Solution] A terminal device includes: a communication unit configured to perform wireless communication; and a control unit configured to allocate power for communication between a first serving cell and a second serving cell with different sub frame lengths. The control unit calculates transmission power of a first uplink physical channel occurring in the first serving cell in a first time unit, and calculates transmission power of a second uplink physical channel occurring in the second serving cell in a second time unit.

TECHNICAL FIELD

The present disclosure relates to a terminal device, a base stationdevice, a communication method, and a program.

BACKGROUND ART

Wireless access schemes and wireless networks of cellular mobilecommunication (hereinafter also referred to as Long Term Evolution(LTE),LTE-Advanced (LTE-A), LTE-Advanced Pro (LTE-A Pro), New Radio (NR), NewRadio Access Technology (NRAT), Evolved Universal Terrestrial RadioAccess (EUTRA), or Further EUTRA (FEUTRA)) are under review in 3rdGeneration Partnership Project (3GPP). Further, in the followingdescription, LTE includes LTE-A, LTE-A Pro, and EUTRA, and NR includesNRAT and FEUTRA. In LTE and NR, a base station device (base station) isalso referred to as an evolved Node B (eNodeB), and a terminal device (amobile station, a mobile station device, or a terminal) is also referredto as a user equipment (UE). LTE and NR are cellular communicationsystems in which a plurality of are as covered by a base station deviceare arranged in a cell form. A single base station device may manage aplurality of cells.

NR is a different Radio Access Technology (RAT) from LTE as a wirelessaccess scheme of the next generation of LTE. NR is an access technologycapable of handling various use eases including Enhanced Mobilebroadband (eMBB), Massive Machine Type Communications (mMTC), and ultrareliable and Low Latency Communications (URLLC). NR is reviewed for thepurpose of a technology framework corresponding to use scenarios,request conditions, placement scenarios, and the like in such use cases.The details of the scenarios or request conditions of NR are disclosedin Non-Patent Literature 1.

CITATION LIST Non-Patent Literature

Non-Patent Literature 1: 3rd Generation Partnership Project; TechnicalSpecification Group Radio Access Network; Study on Scenarios andRequirements for Next Generation Access Technologies; (Release 14), 3GPPTR 38.913 V0. 2.0 (2016-02).

-   <http://www.3gpp.org/ftp//Specs/archieve/38_series/38.913/38913-020.zip>

DISCLOSURE OF INVENTION Technical Problem

In wireless access technologies, it is preferable to design parameters(physical parameters) for definitions or the like of wireless frames inwhich transmission signals, downlink physical channels, or uplinkphysical channels are mapped, such as sub carrier intervals or symbollengths, to be flexible to use cases. Thus, in view of frequency useefficiency, it is important to perform multiplexing of a plurality ofwireless access technologies designed flexibly. In the related art, onlymultiplexing of wireless access technologies by definition of the sameradio resources has been examined. However, since multiplexing ofwireless access technologies by definition of other radio resources isnot assumed, it is difficult to multiplex wireless access technologiesby the definition of the other radio resources.

Accordingly, the present disclosure proposes a terminal device, a basestation device, a communication method, and a program capable of furtherimproving whole system transmission efficiency in a communication systemin which the base station device and the terminal device communicate.

Solution to Problem

According to the present disclosure, there is provided a terminal deviceincluding: a communication unit configured to perform wirelesscommunication; and a control unit configured to allocate power forcommunication between a first serving cell and a second serving cellwith different sub frame lengths. The control unit calculatestransmission power of a first uplink physical channel occurring in thefirst serving cell in a first time unit, and calculates transmissionpower of a second uplink physical channel occurring in the secondserving cell in a second time unit.

In addition, according to the present disclosure, there is provided abase station device including: a communication unit configured toperform wireless communication; and a control unit configured to set afirst serving cell and a second serving cell with different sub framelengths. The control unit sets a first unit time for calculatingtransmission power of a first uplink physical channel occurring in thefirst serving cell, and sets a second unit time for calculatingtransmission power of a second uplink physical channel occurring in thesecond serving cell.

In addition, according to the present disclosure, there is provided acommunication method including: performing wireless communication;allocating, by a processor, power for communication between a firstserving cell and a second serving cell with different still framelengths; calculating transmission power of a first uplink physicalchannel occurring in the first serving cell in a first time unit; andcalculating transmission power of a second uplink physical channeloccurring in the second serving cell in a second time unit.

In addition, according to the present disclosure, there is provided acommunication method including: performing wireless communication;setting, by a processor, a first serving cell and a second serving cellwith different sub frame lengths; setting a first unit time forcalculating transmission power of a first uplink physical channeloccurring in the first serving cell; and setting a second unit time forcalculating transmission power of a second uplink physical channeloccurring in the second serving cell.

In addition, according to the present disclosure, there is provided aprogram causing a computer to: perform wireless communication; allocatepower for communication between a first serving cell and a secondserving cell with different sub frame lengths; calculate transmissionpower of a first uplink physical channel occurring in the first servingcell in a first time unit; and calculate transmission power of a seconduplink physical channel occurring in the second serving cell in a secondtime unit.

In addition, according to the present disclosure, there is provided aprogram causing a computer to: perform wireless communication; set afirst serving cell and a second serving cell with different sub framelengths; set a first unit time for calculating transmission power of afirst uplink physical channel occurring in the first serving cell; andset a second unit time for calculating transmission power of a seconduplink physical channel occurring in the second serving cell.

Advantageous Effects of Invention

According to the present disclosure, as described above, it is possibleto provide a terminal device, a base station device, a communicationmethod, and a program capable of further improving whole systemtransmission efficiency in a communication system in which the basestation device and the terminal device communicate.

Note that the effects described above are not necessarily limitative.With or in the place of the above effects, there may be achieved any oneof the effects described in this specification or other effects that maybe grasped from this specification.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram illustrating an example of setting of a componentcarrier according to an embodiment of the present disclosure.

FIG. 2 is a diagram illustrating an example of setting of a componentcarrier according to the embodiment.

FIG. 3 is a diagram illustrating an example of a downlink sub frame ofLTE according to the embodiment.

FIG. 4 is a diagram illustrating an example of an uplink sub frame ofLTE according to the embodiment.

FIG. 5 is a diagram illustrating examples of parameter sets related to atransmission signal in an NR cell.

FIG. 6 is a diagram illustrating an example of an NR downlink sub frameof the embodiment.

FIG. 7 is a diagram illustrating an example of an NR uplink sub frame ofthe embodiment.

FIG. 8 is a schematic block diagram illustrating a configuration of abase station device of the embodiment.

FIG. 9 is a schematic block diagram illustrating a configuration of aterminal device of the embodiment.

FIG. 10 is a diagram illustrating an example of downlink resourceelement mapping of LTE according to the embodiment.

FIG. 11 is a diagram illustrating an example of downlink resourceelement mapping of NR according to the embodiment.

FIG. 12 is a diagram illustrating an example of downlink resourceelement mapping of NR according to the embodiment.

FIG. 13 is a diagram illustrating an example of downlink resourceelement mapping of NR according to the embodiment.

FIG. 14 is a diagram illustrating an example of a frame configuration ofa self-contained transmission according to the embodiment.

FIG. 15 is a diagram illustrating an example of a case in which uplinkphysical channels are PUSCHs.

FIG. 16 is a diagram illustrating an example of a case in which uplinkphysical channels are PUSCHs.

FIG. 17 is an explanatory diagram illustrating a first example of amethod of scaling transmission power of the uplink physical channelsand/or the uplink physical signals.

FIG. 18 is an explanatory diagram illustrating a first example of amethod of scaling transmission power of the uplink physical channelsand/or the uplink physical signals.

FIG. 19 is an explanatory diagram illustrating a second example of themethod of scaling transmission power of the uplink physical channelsand/or the uplink physical signals.

FIG. 20 is an explanatory diagram illustrating a third example of themethod of scaling transmission power of the uplink physical channelsand/or the uplink physical signals.

FIG. 21 is an explanatory diagram illustrating an example of a case inwhich a plurality of cell groups with different uplink time units areoperated in accordance with synchronous dual connectivity.

FIG. 22 is an explanatory diagram illustrating an example of a case inwhich a plurality of cell groups with different uplink time units areoperated in accordance with asynchronous dual connectivity.

FIG. 23 is a block diagram illustrating a fist example of a schematicconfiguration of an eNB.

FIG. 24 is a block diagram illustrating a second example of theschematic configuration of the eNB.

FIG. 25 is a block diagram illustrating an example of a schematicconfiguration of a smartphone.

FIG. 26 is a block diagram illustrating an example of a schematicconfiguration of a car navigation apparatus.

DISCLOSURE OF INVENTION

Hereinafter, (a) preferred embodiment(s) of the present disclosure willbe described in detail with reference to the appended drawings. Notethat, in this specification and the appended drawings, structuralelements that have substantially the same function and structure aredenoted with the same reference numerals, and repeated explanation ofthese structural elements is omitted. Further, technologies, functions,methods, configurations, and procedures to be described below and allother descriptions can be applied to LTE and NR unless particularlystated otherwise.

Note that the description will be made in the following order.

-   1. Embodiment-   1.1. Overview-   1.2. Wireless frame configuration-   1.3. Channel and signal-   1.4. Configuration-   1.5. Control information and control channel-   1.6. Technical features-   2. Application examples-   2.1. Application example related to base station-   2.2. Application example related to terminal device-   3. Conclusion

1. EMBODIMENT 1.1. Overview <Wireless Communication System in thePresent Embodiment>

In the present embodiment, a wireless communication system includes atleast a base station device 1 and a terminal device 2. The base stationdevice 1 can accommodate multiple terminal devices. The base stationdevice 1 can be connected with another base station device by means ofan X2 interface. Further, the base station device 1 can be connected toan evolved packet core (EPC) by means of an S1 interface. Further, thebase station device 1 can be connected to a mobility management entity(MME) by means of an S1-MME interface and can be connected to a servinggateway (S-GW) by means of an S1-U interface. The S1 interface supportsmany-to-many connection between the MME and/or the S-GW and the basestation device 1. Further, in the present embodiment, the base stationdevice 1 and the terminal device 2 each support LTE and/or NR.

<Wireless Access Technology according to Present Embodiment>

In the present embodiment, the base station device 1 and the terminaldevice 2 each support one or more wireless access technologies (RATs).For example, an RAT includes LTE and NR. A single RAT corresponds to asingle cell (component carrier). That is, in a case in which a pluralityof RATs are supported, the RATs each correspond to different cells. Inthe present embodiment, a cell is a combination of a downlink resource,an uplink resource, and/or a sidelink. Further, in the followingdescription, a cell corresponding to LTE, is referred to as an LTE celland a cell corresponding to NR is referred to as an NR cell.

Downlink communication is communication from the base station device 1to the terminal device 2. Downlink transmission is transmission from thebase station device 1 to the terminal device 2 and is transmission of adownlink physical channel and/or a downlink physical signal. Uplinkcommunication is communication from the terminal device 2 to the basestation device 1. Uplink transmission is transmission from the terminaldevice 2 to the base station device 1 and is transmission of an uplinkphysical channel and/or an uplink physical signal. Sidelinkcommunication is communication from the terminal device 2 to anotherterminal device 2. Sidelink transmission is transmission from theterminal device 2 to another terminal device 2 and is transmission of asidelink physical channel and/or a sidelink physical signal.

The sidelink communication is defined for contiguous direct detectionand contiguous direct communication between terminal devices. Thesidelink communication, a frame configuration similar to that of theuplink and downlink can be used. Further, the sidelink communication canbe restricted to some (sub sets) of uplink resources and/or downlinkresources.

The base station device 1 and the terminal device 2 can supportcommunication in which a set of one or more cells is used in a downlink,an uplink, and/or a sidelink. Communication using a set of a pluralityof cells is also referred to as carrier aggregation or dualconnectivity. The details of the carrier aggregation and the dualconnectivity will be described below. Further, each cell uses apredetermined frequency bandwidth. A maximum value, a minimum value, anda settable value in the predetermined frequency bandwidth can bespecified in advance.

FIG. 1 is a diagram illustrating an example of setting of a componentcarrier according to the present embodiment. In the example of FIG. 1,one LTE cell and two NR cells are set. One LTE cell is set as a primarycell. Two NR cells are set as a primary and secondary cell and asecondary cell. Two NR cells are integrated by the carrier aggregation.Further, the LTE cell and the NR cell are integrated by the dualconnectivity. Note that the LTE cell and the NR cell may be integratedby carrier aggregation. In the example of FIG. 1, NR may not supportsome functions such as a function of performing standalone communicationsince connection can be assisted by an LTE cell which is a primary cell.The function of performing standalone communication includes a functionnecessary for initial connection.

FIG. 2 is a diagram illustrating an example of setting of a componentcarrier according to the present embodiment. In the example of FIG. 2,two NR cells are set. The two NR cells are set as a primary cell and asecondary cell, respectively, and are integrated by carrier aggregation.In this case, when the NR cell supports the function of performingstandalone communication, assist of the LTE cell is not necessary. Notethat the two NR cells may be integrated by dual connectivity.

1.2. Radio Frame Configuration

In the present embodiment, a radio frame configured with 10 ms(milliseconds) is specified. Each radio frame includes two half frames.A time interval of the half frame is 5 ms. Each half frame includes 5sub frames. The time interval of the sub frame is 1 ms and is defined bytwo successive slots. The time interval of the slot is 0.5 ms. An i-thsub frame in the radio frame includes a (2×i)-th slot and a (2×i+1)-thslot. In other words, 10 sub frames are specified in each of the radioframes.

Sub frames include a downlink sub frame, an uplink sub frame, a specialsub frame, a sidelink sub frame, and the like.

The downlink sub frame is a sub frame reserved for downlinktransmission. The uplink sub frame is a sub frame reserved for uplinktransmission. The special sub frame includes three fields. The threefields are a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), andan Uplink Pilot Time Slot (UpPTS). A total length of DWPTS, GP, andUpPTS is 1 ms. The DwPTS is a field reserved for downlink transmission.The UpPTS is a field reserved for uplink transmission. The GP is a fieldin which downlink transmission and uplink transmission are notperformed. Further, the special sub frame may include only the DWPTS andthe GP or may include only the GP and the UpPTS. The special sub frameis placed between the downlink sub frame and the uplink sub frame in TDDand used to perform switching from the downlink sub frame to the uplinksub frame. The sidelink sub frame is a sub frame reserved or set forsidelink communication. The sidelink is used for contiguous directcommunication and contiguous direct detection between terminal devices.

A single radio frame includes a downlink sub frame, an uplink sub frame,a special sub frame, and/or a sidelink sub frame. Further, a singleradio frame includes only a downlink sub frame, an uplink sub frame, aspecial sub frame, or a sidelink sub frame.

A plurality of radio frame configurations are supported. The radio frameconfiguration is specified by the frame configuration type. The frameconfiguration type 1 can be applied only to FDD. The frame configurationtype 2 can be applied only to TDD. The frame configuration type 3 can beapplied only to an operation of a licensed assisted access (LAA)secondary cell.

In the frame configuration type 2, a plurality of uplink-downlinkconfigurations are specified. In the uplink-downlink configuration, eachof 10 sub frames in one radio frame corresponds to one of the downlinksub frame, the uplink sub frame, and the special sub frame. The subframe 0, the sub frame 5 and the DwPTS are constantly reserved fordownlink transmission. The UpPTS and the sub frame just after thespecial sub frame are constantly reserved for uplink transmission.

In the frame configuration type 3, 10 sub frames in one radio frame arereserved for downlink transmission. The terminal device 2 treats a subframe by which PDSCH or a detection signal is not transmitted, as anempty sub frame. Unless a predetermined signal, channel and/or downlinktransmission is detected in a certain sub frame, the terminal device 2assumes that there is no signal and/or channel in the sub frame. Thedownlink transmission is exclusively occupied by one or more consecutivesub frames. The first sub frame of the downlink transmission may bestarted from any one in that sub frame. The last sub frame of thedownlink transmission may be either completely exclusively occupied orexclusively occupied by a time interval specified in the DwPTS.

Further, in the frame configuration type 3, 10 sub frames in one radioframe may be reserved for uplink transmission. Further, each of 10 subframes in one radio frame may correspond to any one of the downlink subframe, the uplink sub frame, the special sub frame, and the sidelink subframe.

The base station device 1 may transmit a downlink physical channel and adownlink physical signal in the DwPTS of the special sub frame. The basestation device 1 can restrict transmission of the physical broadcastchannel (PBCH) in the DwPTS of the special sub frame. The terminaldevice 2 may transmit uplink physical channels and uplink physicalsignals in the UpPTS of the special sub frame. The terminal device 2 canrestrict transmission of some of the uplink physical channels and theuplink physical signals in the UpPTS of the special sub frame.

Note that a time interval in single transmission is referred to as atransmission time interval (TTI) and 1 ms (1 sub frame) is defined as 1TTI in LTE.

<Frame Configuration of LTE in Present Embodiment>

FIG. 3 is a diagram illustrating an example of a downlink sub frame ofLTE according to the present embodiment. The diagram illustrated in FIG.3 is referred to as a downlink resource grid of LTE. The base stationdevice 1 can transmit a downlink physical channel of LTE and/or adownlink physical signal of LTE in a downlink sub frame to the terminaldevice 2. The terminal device 2 can receive a downlink physical channelof LTE and/or a downlink physical signal of LTE in a downlink sub framefrom the base station device 1.

FIG. 4 is a diagram illustrating an example of an uplink sub frame ofLTE according to the present embodiment. The diagram illustrated in FIG.4 is referred to as an uplink resource grid of LTE. The terminal device2 can transmit an uplink physical channel of LTE and/or an uplinkphysical signal of LTE in an uplink sub frame to the base station device1. The base station device 1 can receive an uplink physical channel ofLTE and/or an uplink physical signal of LTE in an uplink sub frame fromthe terminal device 2.

In the present embodiment, the LTE physical resources can be defined asfollows. One slot is defined by a plurality of symbols. The physicalsignal or the physical channel transmitted in each of the slots isrepresented by a resource grid. In the downlink, the resource arid isdefined by a plurality of sub carriers in a frequency direction and aplurality of OFDM symbols in a time direction. In the uplink, theresource grid is defined by a plurality of sub carriers in the frequencydirection and a plurality of SC-FDMA symbols in the time direction. Thenumber of sub carriers or the number of resource blocks may be decideddepending on a bandwidth of a cell. The number of symbols in one slot isdecided by a type of cyclic prefix (CP). The type of CP is a normal CPor an extended CP. In the normal CP, the number of OFDM symbols orSC-FDMA symbols constituting one slot is 7. In the extended CP, thenumber of OFDM symbols or SC-FDMA symbols constituting one slot is 6.Each element in the resource grid is referred to as a resource element.The resource element is identified using an index (number) of a subcarrier and an index (number) of a symbol. Further, in the descriptionof the present embodiment, the OFDM symbol or SC-FDMA symbol is alsoreferred to simply as a symbol.

The resource blocks are used for mapping a certain physical channel (thePDSCH, the PUSCH, or the like) to resource elements. The resource blocksinclude virtual resource blocks and physical resource blocks. A certainphysical channel is mapped to a virtual resource block. The virtualresource blocks are mapped to physical resource blocks. One physicalresource block is defined by a predetermined number of consecutivesymbols in the time domain. One physical resource block is defined froma predetermined number of consecutive sub carriers in the frequencydomain. The number of symbols and the number of sub carriers in onephysical resource block are decided on the basis of a parameter set inaccordance with a type of CP, a sub carrier interval, and/or a higherlayer in the cell. For example, in a case in which the type of CP is thenormal CP, and the sub carrier interval is 15 kHz, the number of symbolsin one physical resource block is 7, and the number of sub carriers is12. In this case, one physical resource block includes (7×12) resourceelements. The physical resource blocks are numbered from 0 in thefrequency domain. Further, two resource blocks in one sub framecorresponding to the same physical resource block number are defined asa physical resource block pair (a PRB pair or an RB pair).

In each LTE cell, one predetermined parameter is used in a certain subframe. For example, the predetermined parameter is a parameter (physicalparameter) related to a transmission signal. Parameters related to thetransmission signal include a CP length, a sub carrier interval, thenumber of symbols in one sub frame (predetermined time length), thenumber of sub carriers in one resource block (predetermined frequencyband), a multiple access scheme, a signal waveform, and the like.

That is, In the LTE cell, a downlink signal and an uplink signal areeach generated using one predetermined parameter in a predetermined timelength (for example, a sub frame). In other words, in the terminaldevice 2, it is assumed that a downlink signal to be transmitted fromthe base station device 1 and an uplink signal to be transmitted to thebase station device 1 are each generated with a predetermined timelength with one predetermined parameter. Further, the base stationdevice 1 is set such that a downlink signal to be transmitted to theterminal device 2 and an uplink signal to be transmitted from theterminal device 2 are each generated with a predetermined time lengthwith one predetermined parameter.

<Frame Configuration of NR in Present Embodiment>

In each NR cell, one or more predetermined parameters are used in acertain predetermined time length (for example, a sub frame). That is,in the NR cell, a downlink signal and an uplink signal are eachgenerated using or more predetermined parameters in a predetermined timelength. In other words, in the terminal device 2, it is assumed that adownlink signal to be transmitted from the base station device 1 and anuplink signal to be transmitted to the base station device 1 are eachgenerated with one or more predetermined parameters in a predeterminedtime length. Further, the base station device 1 is set such that adownlink signal to be transmitted to the terminal device 2 and an uplinksignal to be transmitted from the terminal device 2 are each generatedwith a predetermined time length using one or more predeterminedparameters. In a case in which the plurality of predetermined parametersare used, a signal generated using the predetermined parameters ismultiplexed in accordance with a predetermined method. For example, thepredetermined method includes Frequency Division Multiplexing (FDM),Time Division Multiplexing (TDM), Code Division Multiplexing (CDM),and/or Spatial Division Multiplexing (SDM).

In a combination of the predetermined parameters set in the NR cell, aplurality of kinds of parameter sets can be specified in advance.

FIG. 5 is a diagram illustrating examples of the parameter sets relatedto a transmission signal in the NR cell. In the example of FIG. 5,parameters of the transmission signal included in the parameter setsinclude a sub carrier interval, the number of sub carriers per resourceblock in the NR cell, the number of symbols per sub frame, and a CPlength type. The CP length type is a type of CP length used in the NRcell. For example, CP length type 1 is equivalent to a normal CP in LTEand CP length type 2 is equivalent to an extended CP in LTE.

The parameter sets related to a transmission signal in the NR cell canbe specified individually with a downlink and an uplink. Further, theparameter sets related to a transmission signal in the NR cell can beset independently with a downlink and an uplink.

FIG. 6 is a diagram illustrating an example of an NR downlink sub frameof the present embodiment. In the example of FIG. 6, signals generatedusing parameter set 1, parameter set 0, and parameter set 2 aresubjected to FDM in a cell (system bandwidth). The diagram illustratedin FIG. 6 is also referred to as a downlink resource grid of NR. Thebase station device 1 can transmit the downlink physical channel of NRand/or the downlink physical signal of NR in a downlink sub frame to theterminal device 2. The terminal device 2 can receive a downlink physicalchannel of NR and/or the downlink physical signal of NR in a downlinksub frame from the base station device 1.

FIG. 7 is a diagram illustrating an example of an NR uplink sub frame ofthe present embodiment. In the example of FIG. 7, signals generatedusing parameter set 1, parameter set 0, and parameter set 2 aresubjected to FDM in a cell (system bandwidth). The diagram illustratedin FIG. 6 is also referred to as an uplink resource grid of NR. The basestation device 1 can transmit the uplink physical channel of NR and/orthe uplink physical signal of NR in an uplink sub frame to the terminaldevice 2. The terminal device 2 can receive an uplink physical channelof NR and/or the uplink physical signal of NR in an uplink sub framefrom the base station device 1.

In this way, in NR, the sub carrier interval and the symbol length canbe selectively controlled in accordance with a situation (that is, thesub carrier interval and the symbol length are variable). In thisconfiguration, in NR, for example, in a situation in which reliabilityis requested as in a technology called so-called vehicular-to-X(something) (V2X), lower delay communication can be realized byshortening the symbol length.

<Antenna Port in Present Embodiment>

An antenna port is defined so that a propagation channel carrying acertain symbol can be inferred from a propagation channel carryinganother symbol in the same antenna port. For example, different physicalresources in the same antenna port can be assumed to be transmittedthrough the same propagation channel. In other words, for a symbol in acertain antenna port, it is possible to estimate and demodulate apropagation channel in accordance with the reference signal in theantenna port. Further, there is one resource grid for each antenna port.The antenna port is defined by the reference signal. Further, eachreference signal can define a plurality of antenna ports.

The antenna port is specified or identified with an antenna port number.For example, antenna ports 0 to 3 are antenna ports with which CRS istransmitted. That is, the PDSCH transmitted with antenna ports 0 to 3can be demodulated to CRS corresponding to antenna ports 0 to 3.

In a case in which two antenna ports satisfy a predetermined condition,the two antenna ports can be regarded as being a quasi co-location(QCL). The predetermined condition is that a wide are a characteristicof a propagation channel carrying a symbol in one antenna port can beinferred from a propagation channel carrying a symbol in another antennaport. The wide are a characteristic includes a delay dispersion, aDoppler spread, a Doppler shift, an average gain, and/or an averagedelay.

In the present embodiment, the antenna port numbers may be defineddifferently for each RAT or may be defined commonly between RATS. Forexample, antenna ports 0 to 3 in LTE are antenna ports with which CRS istransmitted. In the NR antenna ports 0 to 3 can be set as antenna portswith which CRS similar to that of LTE is transmitted. Further, in NR,the antenna ports with which CRS is transmitted like LTE can be set asdifferent antenna port numbers from antenna ports 0 to 3. In thedescription of the present embodiment, predetermined antenna portnumbers can be applied to LTE and/or NR.

1.3. Channel and Signal <Physical Channel and Physical Signal in PresentEmbodiment>

In the present embodiment, physical channels and physical signals areused. The physical channels include a downlink physical channel, anuplink physical channel, and a sidelink physical channel. The physicalsignals include a downlink physical signal, an uplink physical signal,and a sidelink physical signal.

In LTE, a physical channel and a physical signal are referred to as anLTE physical channel and an LTE physical signal. In NR, a physicalchannel and a physical signal are referred to as an NR physical channeland an NR physical signal. The LTE physical channel and the NR physicalchannel can be defined as different physical channels, respectively. TheLTE physical signal and the NR physical signal can be defined asdifferent physical signals, respectively. In the description of thepresent embodiment, the LTE physical channel and the NR physical channelare also simply referred to as physical channels, and the LTE physicalsignal and the NR physical signal are also simply referred to asphysical signals. That is, the description of the physical channels canbe applied to any of the LTE physical channel and the NR physicalchannel. The description of the physical signals can be applied to anyof the LTE physical signal and the NR physical signal.

<NR Physical Channel and NR Physical Signal in Present Embodiment>

As described above, the description of the physical channel and thephysical signal can also be applied to the NR physical channel and theNR physical signal, respectively. The NR physical channel and the NRphysical signal are referred to as the following.

The NR downlink physical channel includes an NR-PBCH, an NR-PCFICH(Physical Control Format Indicator Channel), an NR-PHICH (PhysicalHybrid automatic repeat request Indicator Channel), an NR-PDCCH(Physical Downlink Control Channel), an NR-EPDCCH (Enhanced PDCCH), anNR-MPDCCH (MTC PDCCH), an NR-R-PDCCH (Relay PDCCH), an NR-PDSCH(Physical Downlink Share d Channel), an NR-PMCH (Physical MulticastChannel), and the like.

The NR downlink physical signal includes an NR-SS (Synchronizationsignal), an NR-DL-RS (Downlink Reference Signal), an NR-DS (Discoverysignal), and the like. The NR-SS includes an NR-PSS (Primarysynchronization signal), an NR-SSS (Secondary synchronization signal),and the like. The NR-RS includes an NR-CRS (Cell-specific referencesignal), an NR-PDSCH-DMRS (UE-specific reference signal associated withPDSCH), an NR-EPDCCH-DMRS (Demodulation reference signal associated withEPDCCH), an NR-PRS (Positioning Reference Signal), an NR-CSI-RS (ChannelState Information-reference signal), an NR-TRS (Tracking referencesignal), and the like.

The NR uplink physical channel includes an NR-PUSCH (Physical UplinkShare d Channel), an NR-PUCCH (Physical Uplink Control Channel), anNR-PRACH (Physical Random Access Channel), and the like.

The NR uplink physical signal includes an NR-UL-RS (Uplink ReferenceSignal). The NR-UL-RS includes an NR-UL-DMRS (Uplink demodulationsignal), an NR-SRS (Sounding reference signal), and the like.

The NR sidelink physical channel includes an NR-PSBCH (Physical SidelinkBroadcast Channel), an NR-PSCCH (Physical Sidelink Control Channel), anNR-PSDCH (Physical Sidelink Discovery Channel), an NR-PSSCH (PhysicalSidelink Share d Channel), and the like.

<Downlink Physical Channel in Present Embodiment>

The PBCH is used to broadcast a master information block (MIB) which isbroadcast information specific to a serving cell of the base stationdevice 1. The PBCH is transmitted only through the sub frame 0 in theradio frame. The MIB can be updated at intervals of 40 ms. The PBCH isrepeatedly transmitted with a cycle of 10 ms. Specifically, initialtransmission of the MIB is performed in the sub frame 0 in the radioframe satisfying a condition that a remainder obtained by dividing asystem frame number (SFN) by 4 is 0, and retransmission (repetition) ofthe MIB is performed in the sub frame 0 in all the other radio frames.The SFN is a radio frame number (system frame number). The MIB is systeminformation. For example, the MIB includes information indicating theSFN.

The PCFICH is used to transmit information related to the number of OFDMsymbols used for transmission of the PDCCH. A region indicated by PCFICHis also referred to as a PDCCH region. The information transmittedthrough the PCFICH is also referred to as a control format indicator(CFI).

The PHICH is used to transmit an HARD)-ACK (an HARQ indicator, HARQfeedback, response information, and HARQ (Hybrid Automatic Repeatrequest)) indicating ACKnowledgment (ACK) or negative ACKnowledgment(NACK) of uplink data (an uplink share d channel (UL-SCH)) received bythe base station device 1. For example, in a case in which the HARQ-ACKindicating ACK is received by the terminal device 2, correspondinguplink data is not retransmitted. For example, in a case in which theterminal device 2 receives the HARQ-ACK indicating NACK, the terminaldevice 2 retransmits corresponding uplink data through a predetermineduplink sub frame. A certain PHICH transmits the HARQ-ACK for certainuplink data. The base station device 1 transmits each HARQ-ACK to aplurality of pieces of uplink data included in the same PUSCH using aplurality of PHICHs.

The PDCCH and the EPDCCH are used to transmit downlink controlinformation (DCI). Mapping of an information bit of the downlink controlinformation is defined as a DCI format. The downlink control informationincludes a downlink grant and an uplink grant. The downlink grant isalso referred to as a downlink assignment or a downlink allocation.

The PDCCH is transmitted by a set of one or more consecutive controlchannel elements (CCEs). The CCE includes 9 resource element groups(REGs). An REG includes 4 resource elements. In a case in which thePDCCH is constituted by n consecutive CCEs, the PDCCH starts with a CCEsatisfying a condition that a remainder after dividing an index (number)i of the CCE by n is 0.

The EPDCCH is transmitted by a set of one or more consecutive enhancedcontrol channel elements (ECCEs). The ECCE is constituted by a pluralityof enhanced resource element groups (EREGs).

The downlink grant is used for scheduling of the PDSCH in a certaincell. The downlink grant is used for scheduling of the PDSCH in the samesub frame as a sub frame in which the downlink grant is transmitted. Theuplink grant is used for scheduling of the PUSCH in a certain cell. Theuplink grant is used for scheduling of a single PUSCH in a fourth subframe from a sub frame in which the uplink grant is transmitted orlater.

A cyclic redundancy check (CRC) parity bit is added to the DCI. The CRCparity bit is scrambled using a radio network temporary identifier(RNTI). The RNTI is an identifier that can be specified or set inaccordance with a purpose of the DCI or the like. The RNTI is anidentifier specified in a specification in advance, an identifier set asinformation specific to a cell, an identifier set as informationspecific to the terminal device 2, or an identifier set as informationspecific to a group to which the terminal device 2 belongs. For example,in monitoring of the PDCCH or the EPDCCH, the terminal device 2descrambles the CRC parity bit added to the DCI with a predeterminedRNTI and identifies whether or not the CRC is correct. In a case inwhich the CRC is correct, the DCI is understood to be a DCI for theterminal device 2.

The PDSCH is used to transmit downlink data (a downlink share d channel(DL-SCH)). Further, the PDSCH is also used to transmit controlinformation of a higher layer.

The PMCH is used to transmit multicast data (a multicast channel (MCH)).

In the PDCCH region, a plurality of PDCCHs may be multiplexed accordingto frequency, time, and/or space. In the EPDCCH region, a plurality ofEPDCCHs may be multiplexed according to frequency, time, and/or space.In the PDSCH region, a plurality of PDSCHs may be multiplexed accordingto frequency, time, and/or space. The PDCCH, the PDSCH, and/or theEPDCCH may be multiplexed according to frequency, time, and/or space.

<Downlink Physical Signal in Present Embodiment>

A synchronization signal is used for the terminal device 2 to obtaindownlink synchronization in the frequency domain and/or the time domain.The synchronization signal includes a primary synchronization signal(PSS) and a secondary synchronization signal (SSS). The synchronizationsignal is placed in a predetermined sub frame in the radio frame. Forexample, in the TDD scheme, the synchronization signal is placed in thesub frames 0, 1, 5, and 6 in the radio frame. In the FDD scheme, thesynchronization signal is placed in the sub frames 0 and 5 in the radioframe.

The PSS may be used for coarse frame symbol timing synchronization(synchronization in the time domain) or identification of a cellidentification group. The SSS may be used for more accurate frame timingsynchronization, cell identification, or CP length detection. In otherwords, frame timing synchronization and cell identification can beperformed using the PSS and the SSS.

The downlink reference signal is used for the terminal device 2 toperform propagation path estimation of the downlink physical channel,propagation path correction, calculation of downlink channel stateinformation (CSI), and/or measurement of positioning of the terminaldevice 2.

The CRS is transmitted in the entire band of the sub frame. The CRS isused for receiving (demodulating) the PBCH, the PDCCH, the PHICH, thePCFICH, and the PDSCH. The CRS may be used for the terminal device 2 tocalculate the downlink channel state information. The PBCH, the PDCCH,the PHICH, and the PCFICH are transmitted through the antenna port usedfor transmission of the CRS. The CRS supports the antenna portconfigurations of 1, 2, or 4. The CRS is transmitted through one or moreof the antenna ports 0 to 3.

The URS associated with the PDSCH is transmitted through a sub frame anda band used for transmission of the PDSCH with which the URS isassociated. The URS is used for demodulation of the PDSCH to which theURS is associated. The URS associated with the PDSCH is transmittedthrough one or more of the antenna ports 5 and 7 to 14.

The PDSCH is transmitted through an antenna port used for transmissionof the CRS or the URS on the basis of the transmission mode and the DCIformat. A DCI format 1A is used for scheduling of the PDSCH transmittedthrough an antenna port used for transmission of the CRS. A DCI format2D is used for scheduling of the PDSCH transmitted through an antennaport used for transmission of the URS.

The DMRS associated with the EPDCCH is transmitted through a sub frameand a band used for transmission of the EPDCCH to which the DMRS isassociated. The DMRS is used for demodulation of the EPDCCH with whichthe DMRS is associated. The EPDCCH is transmitted through an antennaport used for transmission of the DMRS. The DMRS associated with theEPDCCH is transmitted through one or more of the antenna ports 107 to114.

The CSI-RS is transmitted through a set sub frame. The resources inwhich the CSI-RS is transmitted are set by the base station device 1.The CSI-RS is used for the terminal device 2 to calculate the downlinkchannel state information. The terminal device 2 performs signalmeasurement (channel measurement) using the CSI-RS. The CSI-RS supportssetting of some or all of the antenna ports 1, 2, 4, 8, 12, 16. 24, and32. The CSI-RS is transmitted through one or more of the antenna ports15 to 46. Further, an antenna port to be supported may be decided on thebasis of a terminal device capability of the terminal device 2, settingof an RRC parameter, and/or a transmission mode to be set.

Resources of the ZP CSI-RS are set by a higher layer. Resources of theZP CSI-RS may be transmitted with zero output power. In other words, theresources of the ZP CSI-RS may transmit nothing. The ZP PDSCH and theEPDCCH are not transmitted in the resources in which the ZP CSI-RS isset. For example, the resources of the ZP CSI-RS are used for a neighborcell to transmit the NZP CSI-RS (Non-Zero Power CSI-RS). Further, forexample, the resources of the ZP CSI-RS (Zero Power CSI-RS) are used tomeasure the CSI-IM (Channel State Information-Interference Measurement).Further, for example, the resources of the ZP CSI-RS are resources withwhich a predetermined channel such as the PDSCH is not transmitted. Inother words, the predetermined channel is mapped (to be rate-matched orpunctured) except for the resources of the ZP CSI-RS.

<Uplink Physical Signal in Present Embodiment>

The PUCCH is a physical channel used for transmitting uplink controlinformation (UCI). The uplink control information includes downlinkchannel state information (CSI), a scheduling request (SR) indicating arequest for PUSCH resources, and a HARQ-ACK to downlink data (atransport block (TB) or a downlink-share d channel (DL-SCH)). TheHARQ-ACK is also referred to as ACK/NACK, HARQ feedback, or responseinformation. Further, the HARQ-ACK to downlink data indicates ACK, NACK,or DTX.

The PUSCH is a physical channel used for transmitting uplink data(uplink-share d channel (UL-SCH)). Further, the PUSCH may be used totransmit the HARQ-ACK and/or the channel state information together withuplink data. Further, the PUSCH may be used to transmit only the channelstate information or only the HARQ-ACK and the channel stateinformation.

The PRACH is a physical channel used for transmitting a random accesspreamble. The PRACH can be used for the terminal device 2 to obtainsynchronization in the time domain with the base station device 1.Further, the PRACH is also used to indicate an initial connectionestablishment procedure (process), a handover procedure, a connectionre-establishment procedure, synchronization (timing adjustment) foruplink transmission, and/or a request for PUSCH resources.

In the PUCCH region, a plurality of PUCCHs are frequency, time, space,and/or code multiplexed. In the PUSCH region, a plurality of PUSCHs maybe frequency, time, space, and/or code multiplexed. The PUCCH and thePUSCH may be frequency, time, space, and/or code multiplexed. The PRACHmay be placed over a single sub frame or two sub frames. A plurality ofPRACHs may be code-multiplexed.

<Uplink Physical Signal in Present Embodiment>

The UL-DMRS relates to transmission of the PUSCH or the PUCCH. TheUL-DMRS is time-multiplexed with the PUSCH or the PUCCH. The basestation device 1 may use the UL-DMRS in order to perform propagationpath correction of the PUSCH or the PUCCH. In the description of thepresent embodiment, the transmission of the PUSCH also includesmultiplexing and transmission of the PUSCH and the UL-DMRS. In thedescription of the present embodiment, the transmission of the PUCCHalso includes multiplexing and transmission of the PUCCH and theUL-DMRS.

The SRS does not relate to the transmission of the PUSCH or the PUCCH.The base station device 1 may use the SRS in order to measure an uplinkchannel state.

The SRS is transmitted using the final SC-FDMA symbol in the uplink subframe. That is, the SRS is disposed in the final SC-FDS A symbol in theuplink sub frame. The terminal device 2 can restrict simultaneoustransmission of the SRS and the PUCCH, the PUSCH, and/or the PRACH in acertain SC-FDMA symbol of a certain cell. The terminal device 2 cantransmit the PUSCH and/or the PUCCH using the SC-FDMA symbols except forthe final SC-FDMA symbol in the certain uplink sub frame of the certaincell and can transmit the SRS using the final SC-FDMA symbol of theuplink sub frame. That is, in the uplink sub frame of the certain cell,the terminal device 2 can transmit the SRS, and the PUSCH and the PUCCH.

With regard to the SRS, a trigger type 0 SRS and a trigger type 1 SRSare defined as SRSs of which trigger types are different. The triggertype 0 SRS is transmitted in a case in which a parameter related to thetrigger type 0 SRS is set by the higher layer signaling. The triggertype 1 SRS is transmitted in a case in which a parameter related to thetrigger type 1 SRS is set in accordance with higher layer signaling andthe transmission is requested by an SRS request included in the DCIformat 0, 1A, 2B, 2C, 2D, or 4. Note that the SRS request is included inboth the FDD and the TDD in the DCI format 0, 1A, or 4 and is includedin only the TDD in the DCI format 2B, 2C, or 2D. In a case in whichtransmission of the trigger type 0 SRS and transmission of the triggertype 1 SRS occur in the same sub frame of the same serving cell, thetransmission of the trigger type 1 SRS is preferred.

<Physical Resources for Control Channel in Present Embodiment>

A resource element group (REG) is used to define mapping of the resourceelement and the control channel. For example, the REG is used formapping of the PDCCH, the PHICH, or the PCFICH. The REG is constitutedby four consecutive resource elements which are in the same OFDM symboland not used for the CRS in the same resource block. Further, the REG isconstituted by first to fourth OFDM symbols in a first slot in a certainsub frame.

An enhanced resource element group (EREG) is used to define mapping ofthe resource elements and the enhanced control channel. For example, theEREG is used for mapping of the EPDCCH. One resource block pair isconstituted by 16 EREGs. Each EREG is assigned a number of 0 to 15 foreach resource block pair. Each EREG is constituted by 9 resourceelements excluding resource elements used for the DM-RS associated withthe EPDCCH in one resource block pair.

1.4. Configuration

FIG. 8 is a schematic block diagram illustrating a configuration of thebase station device 1 of the present embodiment. As illustrated in FIG.3, the base station device 1 includes a higher layer processing unit101, a control unit 103, a receiving unit 105, a transmitting unit 107,and a transceiving antenna 109. Further, the receiving unit 105 includesa decoding unit 1051, a demodulating unit 1053, a demultiplexing unit1055, a wireless receiving unit 1057, and a channel measuring unit 1059.Further, the transmitting unit 107 includes an encoding unit 1071, amodulating unit 1073, a multiplexing unit 1075, a wireless transmittingunit 1077, and a downlink reference signal generating unit 1079.

As described above, the base station device 1 can support one or moreRATs. Some or all of the units included in the base station device 1illustrated in FIG. 8 can be configured individually in accordance withthe RAT. For example, the receiving unit 105 and the transmitting unit107 are configured individually in LTE and NR. Further, in the NR cell,some or all of the units included in the base station device 1illustrated in FIG. 8 can be configured individually in accordance witha parameter set related to the transmission signal. For example, in acertain NR cell, the wireless receiving unit 1057 and the wirelesstransmitting unit 1077 can be configured individually in accordance witha parameter set related to the transmission signal.

The higher layer processing unit 101 performs processes of a mediumaccess control (MAC) layer, a packet data convergence protocol (PDCP)layer, a radio link control (RLC) layer, and a radio resource control(RRC) layer. Further, the higher layer processing unit 101 generatescontrol information to control the receiving unit 105 and thetransmitting unit 107 and outputs the control information to the controlunit 103.

The control unit 103 controls the receiving unit 105 and thetransmitting unit 107 on the basis of the control information from thehigher layer processing unit 101. The control unit 103 generates controlinformation to be transmitted to the higher layer processing unit 101and outputs the control information to the higher layer processing unit101. The control unit 103 receives a decoded signal from the decodingunit 1051 and a channel estimation result from the channel measuringunit 1059. The control unit 103 outputs a signal to be encoded to theencoding unit 1071. Further, the control unit 103 is used to control thewhole or a part of the base station device 1.

The higher layer processing unit 101 performs a process and managementrelated to RAT control, radio resource control, sub frame setting,scheduling control, and/or CSI report control.

The process and the management in the higher layer processing unit 101are performed for each terminal device or in common to terminal devicesconnected to the base station device. The process and the management inthe higher layer processing unit 101 may be performed only by the higherlayer processing unit 101 or may be acquired from a higher node oranother base station device. Further, the process and the management inthe higher layer processing unit 101 may be individually performed inaccordance with the RAT. For example, the higher layer processing unit101 individually performs the process and the management in LTE and theprocess and the management in NR.

Under the RAT control of the higher layer processing unit 101,management related to the RAT is performed. For example, under the RATcontrol, the management related to LTE and/or the management related toNR is performed. The management related to NR includes setting and aprocess of a parameter set related to the transmission signal in the NRcell.

In the radio resource control in the higher layer processing unit 101,generation and/or management of downlink data (transport block), systeminformation, an RRC message (RRC parameter), and/or a MAC controlelement (CE) are performed.

In a sub frame setting in the higher layer processing unit 101,management of a sub frame setting, a sub frame pattern setting, anuplink-downlink setting, an uplink reference UL-DL setting, and/or adownlink reference UL-DL, setting is performed. Further, the sub framesetting in the higher layer processing unit 101 is also referred to as abase station sub frame setting. Further, the sub frame setting in thehigher layer processing unit 101 can be decided on the basis of anuplink traffic volume and a downlink traffic volume. Further, the subframe setting in the higher layer processing unit 101 can be decided onthe basis of a scheduling result of scheduling control in the higherlayer processing unit 101.

In the scheduling control in the higher layer processing unit 101, afrequency and a sub frame to which the physical channel is allocated, acoding rate, a modulation scheme, and transmission power of the physicalchannels, and the like are decided on the basis of the received channelstate information, an estimation value, a channel quality, or the likeof a propagation path input from the channel measuring unit 1059, andthe like. For example, the control unit 103 generates the controlinformation (DCI format) on the basis of the scheduling result of thescheduling control in the higher layer processing unit 101.

In the CSI report control in the higher layer processing unit 101, theCSI report of the terminal device 2 is controlled. For example, asettings related to the CSI reference resources assumed to calculate theCSI in the terminal device 2 is controlled.

Under the control from the control unit 103, the receiving unit 105receives a signal transmitted from the terminal device 2 via thetransceiving antenna 109, performs a reception process such asdemultiplexing, demodulation, and decoding, and outputs informationwhich has undergone the reception process to the control unit 103.Further, the reception process in the receiving unit 105 is performed onthe basis of a setting which is specified in advance or a settingnotified from the base station device 1 to the terminal device 2.

The wireless receiving unit 1057 performs conversion into anintermediate frequency (down conversion), removal of an unnecessaryfrequency component, control of an amplification level such that asignal level is appropriately maintained, quadrature demodulation basedon an in-phase component and a quadrature component of a receivedsignal, conversion from an analog signal into a digital signal, removalof a guard interval (GI), and/or extraction of a signal in the frequencydomain by fast Fourier transform (FFT) on the uplink signal received viathe transceiving antenna 109.

The demultiplexing unit 1055 separates the uplink channel such as thePUCCH or the PUSCH and/or uplink reference signal from the signal inputfrom the wireless receiving unit 1057. The demultiplexing unit 1055outputs the uplink reference signal to the channel measuring unit 1059.The demultiplexing unit 1055 compensates the propagation path for theuplink channel from the estimation value of the propagation path inputfrom the channel measuring unit 1059.

The demodulating unit 1053 demodulates the reception signal for themodulation symbol of the uplink channel using a modulation scheme suchas binary phase shift keying (BPSK), quadrature phase shift keying(QPSK), 16 quadrature amplitude modulation (QAM), 64 QAM, or 256 QAM.The demodulating unit 1053 performs separation and demodulation of aMIMO multiplexed uplink channel.

The decoding unit 1051 performs a decoding process on encoded bits ofthe demodulated uplink channel. The decoded uplink data and/or uplinkcontrol information are output to the control unit 103. The decodingunit 1051 performs a decoding process on the PUSCH for each transportblock.

The channel measuring unit 1059 measures the estimation value, a channelquality, and/or the like of the propagation path from the uplinkreference signal input from the demultiplexing unit 1055, and outputsthe estimation value, a channel quality, and/or the like of thepropagation path to the demultiplexing unit 1055 and/or the control unit103. For example, the estimation value of the propagation path forpropagation path compensation for the PUCCH or the PUSCH is measured bythe channel measuring unit 1059 using the UL-DMRS, and an uplink channelquality is measured using the SRS.

The transmitting unit 107 carries out a transmission process such asencoding, modulation, and multiplexing on downlink control informationand downlink data input from the higher layer processing unit 101 underthe control of the control unit 103. For example, the transmitting unit107 generates and multiplexes the PHICH, the PDCCH, the EPDCCH, thePDSCH, and the downlink reference signal and generates a transmissionsignal. Further, the transmission process in the transmitting unit 107is performed on the basis of a setting which is specified in advance, asetting notified from the base station device 1 to the terminal device2, or a setting notified through the PDCCH or the EPDCCH transmittedthrough the same sub frame.

The encoding unit 1071 encodes the HARQ indicator (HARQ-ACK), thedownlink control information, and the downlink data input from thecontrol unit 103 using a predetermined coding scheme such as blockcoding, convolutional coding, turbo coding, or the like. The modulatingunit 1073 modulates the encoded bits input from the encoding unit 1071using a predetermined modulation scheme such as BPSK, QPSK, 16 QAM, 64QAM, or 256 QAM. The downlink reference signal generating unit 1079generates the downlink reference signal on the basis of a physical cellidentification (PCI), an RRC parameter set in the terminal device 2, andthe like. The multiplexing unit 1075 multiplexes a modulated symbol andthe downlink reference signal of each channel and arranges resultingdata in a predetermined resource element.

The wireless transmitting unit 1077 performs processes such asconversion into a signal in the time domain by inverse fast Fouriertransform (IFFT), addition of the guard interval, generation of abaseband digital signal, conversion in an analog signal, quadraturemodulation, conversion from a signal of an intermediate frequency into asignal of a high frequency (up conversion), removal of an extrafrequency component, and amplification of power on the signal from themultiplexing unit 1075, and generates a transmission signal. Thetransmission signal output from the wireless transmitting unit 1077 istransmitted through the transceiving antenna 109.

<Configuration Example of Terminal Device 2 in Present Embodiment>

FIG. 9 is a schematic block diagram illustrating a configuration of theterminal device 2 of the present embodiment. As illustrated in FIG. 4,the terminal device 2 includes a higher layer processing unit 201, acontrol unit 203, a receiving unit 205, a transmitting unit 207, and atransceiving antenna 209. Further, the receiving unit 205 includes adecoding unit 2051, a demodulating unit 2053, a demultiplexing unit2055, a wireless receiving unit 2057, and a channel measuring unit 2059.Further, the transmitting unit 207 includes an encoding unit 2071, amodulating unit 2073, a multiplexing unit 2075, a wireless transmittingunit 2077, and an uplink reference signal generating unit 2079.

As described above, the terminal device 2 can support one or more RATs.Some or all of the units included in the terminal device 2 illustratedin FIG. 9 can be configured individually in accordance with the RAT. Forexample, the receiving unit 205 and the transmitting unit 207 areconfigured individually in LTE and NR. Further, in the NR cell, some orall of the units included in the terminal device 2 illustrated in FIG. 9can be configured individually in accordance with a parameter setrelated to the transmission signal. For example, in a certain NR cell,the wireless receiving unit 2057 and the wireless transmitting unit 2077can he configured individually in accordance with a parameter setrelated to the transmission signal.

The higher layer processing unit 201 outputs uplink data (transportblock) to the control unit 203. The higher layer processing unit 201performs processes of a medium access control (MAC) layer, a packet dataconvergence protocol (PDCP) layer, a radio link control (RLC) layer, anda radio resource control (RRC) layer. Further, the higher layerprocessing unit 201 generates control information to control thereceiving unit 205 and the transmitting unit 207 and outputs the controlinformation to the control unit 203.

The control unit 203 controls the receiving unit 205 and thetransmitting unit 207 on the basis of the control information from thehigher layer processing unit 201. The control unit 203 generates controlinformation to be transmitted to the higher layer processing unit 201and outputs the control information to the higher layer processing unit201. The control unit 203 receives a decoded signal from the decodingunit 2051 and a channel estimation result from the channel measuringunit 2059. The control unit 203 outputs a signal to be encoded to theencoding unit 2071. Further, the control unit 203 may be used to controlthe whole or a part of the terminal device 2.

The higher layer processing unit 201 performs a process and managementrelated to RAT control, radio resource control, sub frame setting,scheduling control, and/or CSI report control. The process and themanagement in the higher layer processing unit 201 are performed on thebasis of a setting which is specified in advance and/or a setting basedon control information set or notified from the base station device 1.For example, the control information from the base station device 1includes the RRC parameter, the MAC control element, or the DCI.Further, the process and the management in the higher layer processingunit 201 may be individually performed in accordance with the RAT. Forexample, the higher layer processing unit 201 individually performs theprocess and the management in LTE and the process and the management inNR.

Under the RAT control of the higher layer processing unit 201,management related to the RAT is performed. For example, under the RATcontrol, the management related to LTE and/or the management related toNR is performed. The management related to NR includes setting and aprocess of a parameter set related to the transmission signal in the NRcell.

In the radio resource control in the higher layer processing unit 201,the setting information in the terminal device 2 is managed. In theradio resource control in the higher layer processing unit 201,generation and/or management of uplink data (transport block), systeminformation, an RRC message (RRC parameter), and/or a MAC controlelement (CE) are performed.

In the sub frame setting in the higher layer processing unit 201, thesub frame setting in the base station device 1 and/or a base stationdevice different from the base station device 1 is managed. The subframe setting includes an uplink or downlink setting for the sub frame,a sub frame pattern setting, an uplink-downlink setting, an uplinkreference UL-DL setting, and/or a downlink reference UL-DL setting.Further, the sub frame setting in the higher layer processing unit 201is also referred to as a terminal sub frame setting.

In the scheduling control in the higher layer processing unit 201,control information for controlling scheduling on the receiving unit 205and the transmitting unit 207 is generated on the basis of the DCI(scheduling information) from the base station device 1.

In the CSI report control in the higher layer processing unit 201,control related to the report of the CSI to the base station device 1 isperformed. For example, in the CSI report control, a setting related tothe CSI reference resources assumed for calculating the CSI by thechannel measuring unit 2059 is controlled. In the CSI report control,resource (timing) used for reporting the CSI is controlled on the basisof the DCI and/or the RRC parameter.

Under the control from the control unit 203, the receiving unit 205receives a signal transmitted from the base station device 1 via thetransceiving antenna 209, performs a reception process such asdemultiplexing, demodulation, and decoding, and outputs informationwhich has undergone the reception process to the control unit 203.Further, the reception process in the receiving unit 205 is performed onthe basis of a setting which is specified in advance or a notificationfrom the base station device 1 or a setting.

The wireless receiving unit 2057 performs conversion into anintermediate frequency (down conversion), removal of an unnecessaryfrequency component, control of an amplification level such that asignal level is appropriately maintained, quadrature demodulation basedon an in-phase component and a quadrature component of a receivedsignal, conversion from an analog signal into a digital signal, removalof guard interval (GI), and/or extraction of a signal in the frequencydomain by fast Fourier transform (FFT) on the uplink signal received viathe transceiving antenna 709.

The demultiplexing unit 2055 separates the downlink channel such as thePHICH, PDCCH, EPDCCH, or PDSCH, downlink synchronization signal and/ordownlink reference signal from the signal input from the wirelessreceiving unit 2057. The demultiplexing unit 2055 outputs the uplinkreference signal to the channel measuring unit 2059. The demultiplexingunit 2055 compensates the propagation path for the uplink channel fromthe estimation value of the propagation path input from the channelmeasuring unit 2059.

The demodulating unit 2053 demodulates the reception signal for themodulation symbol of the downlink channel using a modulation scheme suchas BPSK, QPSK, 16 QAM, 64 QAM, or 256 QAM. The demodulating unit 2053performs separation and demodulation of a MIMO multiplexed downlinkchannel.

The decoding unit 2051 performs a decoding process on encoded bits ofthe demodulated downlink channel. The decoded downlink data and/ordownlink control information are output to the control unit 203. Thedecoding unit 2051 performs a decoding process on the PDSCH for eachtransport block.

The channel measuring unit 2059 measures the estimation value, a channelquality, and/or the like of the propagation path from the downlinkreference signal input from the demultiplexing unit 2055, and outputsthe estimation value, a channel quality, and/or the like of thepropagation path to the demultiplexing unit 2055 and/or the control unit203. The downlink reference signal used for measurement by the channelmeasuring unit 2059 may be decided on the basis of at least atransmission mode set by the RRC parameter and/or other RRC parameters.For example, the estimation value of the propagation path for performingthe propagation path compensation on the PDSCH or the EPDCCH is measuredthrough the DL-DMRS. The estimation value of the propagation path forperforming the propagation path compensation on the PDCCH or the PDSCHand/or the downlink channel for reporting the CSI are measured throughthe CRS. The downlink channel for reporting the CSI is measured throughthe CSI-RS. The channel measuring unit 2059 calculates a referencesignal received power (RSRP) and/or a reference signal received quality(RSRQ) on the basis of the CRS, the CSI-RS, or the discovery signal, andoutputs the RSRP and/or the RSRQ to the higher layer processing unit201.

The transmitting unit 207 performs a transmission process such asencoding, modulation, and multiplexing on the uplink control informationand the uplink data input from the higher layer processing unit 201under the control of the control unit 203. For example, the transmittingunit 207 generates and multiplexes the uplink channel such as the PUSCHor the PUCCH and/or the uplink reference signal, and generates atransmission signal. Further, the transmission process in thetransmitting unit 207 is performed on the basis of a setting which isspecified in advance or a setting set or notified from the base stationdevice 1.

The encoding unit 2071 encodes the HARQ indicator (HARQ-ACK), the uplinkcontrol information, and the uplink data input from the control unit 203using a predetermined coding scheme such as block coding, convolutionalcoding, turbo coding, or the like. The modulating unit 2073 modulatesthe encoded bits input from the encoding unit 2071 using a predeterminedmodulation scheme such as BPSK, QPSK, 16 QAM, 64 QAM, or 256 QAM. Theuplink reference signal generating unit 2079 generates the uplinkreference signal on the basis of an RRC parameter set in the terminaldevice 2, and the like. The multiplexing unit 2075 multiplexes amodulated symbol and the uplink reference signal of each channel andarranges resulting data in a predetermined resource element.

The wireless transmitting unit 2077 performs processes such asconversion into a signal in the time domain by inverse fast Fouriertransform (IFFT), addition of the guard interval, generation of abaseband digital signal, conversion in an analog signal, quadraturemodulation, conversion from a signal of an intermediate frequency into asignal of a high frequency (up conversion), removal of an extrafrequency component, and amplification of power on the signal from themultiplexing unit 2075, and generates a transmission signal. Thetransmission signal output from the wireless transmitting unit 2077 istransmitted through the transceiving antenna 209.

1.5. Control Information and Control Channel <Signaling of ControlInformation in Present Embodiment>

The base station device 1 and the terminal device 2 can use variousmethods for signaling (notification, broadcasting, or setting) of thecontrol information. The signaling of the control information can beperformed in various layers (layers). The signaling of the controlinformation includes signaling of the physical layer is signalingperformed through the physical layer, RRC signaling which is signalingperformed through the RRC layer, and MAC signaling which is signalingperformed through the MAC layer. The RRC signaling is dedicated RRCsignaling for notifying the terminal device 2 of the control informationspecific or a common RRC signaling for notifying of the controlinformation specific to the base station device 1. The signaling used bya layer higher than the physical layer such as RRC signaling and MACsignaling is also referred to as signaling of the higher layer.

The RRC signaling is implemented by signaling the RRC parameter. The MACsignaling is implemented by signaling the MAC control element. Thesignaling of the physical layer is implemented by signaling the downlinkcontrol information (DCI) or the uplink control information (UCI). TheRRC parameter and the MAC control element are transmitted using thePDSCH or the PUSCH. The DCI is transmitted using the PDCCH or theEPDCCH. The UCI is transmitted using the PUCCH or the PUSCH. The RRCsignaling and the MAC signaling are used for signaling semi-staticcontrol information and are also referred to as semi-static signaling.The signaling of the physical layer is used for signaling dynamiccontrol information and also referred to as dynamic signaling. The DCIis used for scheduling of the PDSCH or scheduling of the PUSCH. The UCIis used for the CSI report, the HARQ-ACK report, and/or the schedulingrequest (SR).

<Details of Downlink Control Information in Present Embodiment>

The DCI is notified using the DCI format having a field which isspecified in advance. Predetermined information bits are mapped to thefield specified in the DCI format. The DCI notifies of downlinkscheduling information, uplink scheduling information, sidelinkscheduling information, a request for a non-periodic CSI report, or anuplink transmission power command.

The DCI format monitored by the terminal device 2 is decided inaccordance with the transmission mode set for each serving cell. Inother words, a part of the DCI format monitored by the terminal device 2can differ depending on the transmission mode. For example, the terminaldevice 2 in which a downlink transmission mode 1 is set monitors the DCIformat 1A and the DCI format 1. For example, the terminal device 2, inwhich a downlink transmission mode 4 is set monitors the DCI format 1Aand the DCI format 2. For example, the terminal device 2 in which anuplink transmission mode 1 is set monitors the DCI format 0. Forexample, the terminal device 2 in which an uplink transmission mode 2 isset monitors the DCI format 0 and the DCI format 4.

A control region in which the PDCCH for notifying the terminal device 2of the DCI is placed is not notified of, and the terminal device 2detects the DCI for the terminal device 2 through blind decoding (blinddetection). Specifically, the terminal device 2 monitors a set of PDCCHcandidates in the serving cell. The monitoring indicates that decodingis attempted in accordance with all the DCI formats to be monitored foreach of the PDCCHs in the set. For example, the terminal device 2attempts to decode all aggregation levels, PDCCH candidates, and DCIformats which are likely to be transmitted to the terminal device 2. Theterminal device 2 recognizes the DCI (PDCCH) which is successfullydecoded (detected) as the DCI (PDCCH) for the terminal device 2.

A cyclic redundancy check (CRC) is added to the DCI. The CRC is used forthe DCI error detection and the DCI blind detection. A CRC parity bit(CRC) is scrambled using the RNTI. The terminal device 2 detects whetheror not it is a DCI for the terminal device 2 on the basis of the RNTI.Specifically, the terminal device 2 performs de-scrambling on the bitcorresponding, to the CRC using a predetermined RNTI, extracts the CRC,and detects whether or not the corresponding DCI is correct.

The RNTI is specified or set in accordance with a purpose or a use ofthe

DCI. The RNTI includes a cell-RNTI (C-RNTI), a semi persistentscheduling C-RNTI (SPS C-RNTI), a system information-RNTI (SI-RNTI), apaging-RNTI (P-RNTI), a random access-RNTI (RA-RNTI), a transmit powercontrol-PUCCH-RNTI (TPC-PUCCH-RNTI), a transmit power control-PUSCH-RNTI(TPC-PUSCH-RNTI), a temporary C-RNTI, a multimedia broadcast multicastservices (MBMS)-RNTI (M-RNTI)), an eIMTA-RNTI and a CC-RNTI.

The C-RNTI and the SPS C-RNTI are RNTIs which are specific to theterminal device 2 in the base station device 1 (cell), and serve asidentifiers identifying the terminal device 2. The C-RNTI is used forscheduling the PDSCH or the PUSCH in a certain sub frame. The SPS C-RNTIis used to activate or release periodic scheduling of resources for thePDSCH or the PUSCH. A control channel having a CRC scrambled using theSI-RNTI is used for scheduling a system information block (SIB). Acontrol channel with a CRC scrambled using the P-RNTI is used forcontrolling paging. A control channel with a CRC scrambled using theRA-RNTI is used for scheduling a response to the RACH. A control channelhaving a CRC scrambled using the TPC-PUCCH-RNTI is used for powercontrol of the PUCCH. A control channel having a CRC scrambled using theTPC-PUSCH-RTI is used for power control of the PUSCH. A control channelwith a CRC scrambled using the temporary C-RNTI is used by a mobilestation device in which no C-RNTI is set or recognized. A controlchannel with CRC scrambled using the M-RNTI is used for scheduling theMEMS. A control channel with a CRC scrambled using the eIMTA-RNTI isused for notifying of information related to a TDD UL/DL setting of aTDD serving cell in dynamic TDD (eIMTA). The control channel (DCI) witha CRC scrambled using the CC-RNTI is used to notify of setting of anexclusive OFDM symbol in the LAA secondary cell. Further, the DCI formatmay be scrambled using a new RNTI instead of the above RNTI.

Scheduling information (the downlink scheduling information, the uplinkscheduling information, and the sidelink scheduling information)includes information for scheduling in units of resource blocks orresource block groups as the scheduling of the frequency region. Theresource block group is successive resource block sets and indicatesresources allocated to the scheduled terminal device. A size of theresource block group is decided in accordance with a system bandwidth.

<Details of Downlink Control Channel in Present Embodiment>

The DCI is transmitted using a control channel such as the PDCCH or theEPDCCH. The terminal device 2 monitors a set of PDCCH candidates and/ora set of EPDCCH candidates of one or more activated serving cells set byRRC signaling. Here, the monitoring means that the PDCCH and/or theEPDCCH in the set corresponding to all the DCI formats to be monitoredis attempted to be decoded.

A set of PDCCH candidates or a set of EPDCCH candidates is also referredto as a search space. In the search space, a share d search space (CSS)and a terminal specific search space (USS) are defined. The CSS may bedefined only for the search space for the PDCCH.

A common search space (CSS) is a search space set on the basis of aparameter specific to the base station device 1 and/or a parameter whichis specified in advance. For example, the CSS is a search space used incommon to a plurality of terminal devices. Therefore, the base stationdevice 1 maps a control channel common to a plurality of terminaldevices to the CSS, and thus resources for transmitting the controlchannel are reduced.

A UE-specific search space (USS) is a search space set using at least aparameter specific to the terminal device 2. Therefore, the USS is asearch space specific to the terminal device 2, and it is possible forthe base station device 1 to individually transmit the control channelspecific to the terminal device 2 by using the USS. For this reason, thebase station device 1 can efficiently map the control channels specificto a plurality of terminal devices.

The USS may be set to be used in common to a plurality of terminaldevices. Since a common USS is set in a plurality of terminal devices, aparameter specific to the terminal device 2 is set to be the same valueamong a plurality of terminal devices. For example, a unit set to thesame parameter among a plurality of terminal devices is a cell, atransmission point, a group of predetermined terminal devices, or thelike.

The search space of each aggregation level is defined by a set of PDCCHcandidates. Each PDCCH is transmitted using one or more CCE sets. Thenumber of CCEs used in one PDCCH is also referred to as an aggregationlevel. For example, the number of CCEs used in one PDCCH is 1, 2, 4, or8.

The search space of each aggregation level is defined by a set of EPDCCHcandidates. Each EPDCCH is transmitted using one or more enhancedcontrol channel element (ECCE) sets. The number of ECCEs used in oneEPDCCH is also referred to as an aggregation level. For example, thenumber of ECCEs used in one EPDCCH is 1, 2, 4, 8, 16, or 32.

The number of PDCCH candidates or the number of EPDCCH candidates isdecided on the basis of at least the search space and the aggregationlevel. For example, in the CSS, the number of PDCCH candidates in theaggregation levels 4 and 8 are 4 and 2, respectively. For example, inthe USS, the number of PDCCH candidates in the aggregations 1, 2, 4, and8 are 6, 6, 2, and 2, respectively.

Each ECCE includes a plurality of EREGs. The EREG is used to definemapping to the resource element of the EPDCCH. 16 EREGs which areassigned numbers of 0 to 15 are defined in each RB pair. In other words,an EREG 0 to an EREG 15 are defined in each RB pair. For each RB pair,the EREG 0 to the EREG 15 are preferentially defined at regularintervals in the frequency direction for resource elements other thanresource elements to which a predetermined signal and/or channel ismapped. For example, a resource element to which a demodulationreference signal associated with an EPDCCH transmitted through antennaports 107 to 110 is mapped is not defined as the EREG.

The number of ECCEs used in one EPDCCH depends on an EPDCCH format andis decided on the basis of other parameters. The number of ECCEs used inone EPDCCH is also referred to as an aggregation level. For example, thenumber of ECCEs used in one EPDCCH is decided on the basis of the numberof resource elements which can be used for transmission of the EPDCCH inone RB pair, a transmission method of the EPDCCH, and the like. Forexample, the number of ECCEs used in one EPDCCH is 1, 2, 4, 8, 16, or32. Further, the number of EREGs used in one ECCE is decided on thebasis of a type of sub frame and a type of cyclic prefix and is 4 or 8.Distributed transmission and localized transmission are supported as thetransmission method of the EPDCCH.

The distributed transmission or the localized transmission can be usedfor the EPDCCH. The distributed transmission and the localizedtransmission differ in mapping of the ECCE to the EREG and the RB pair.For example, in the distributed transmission, one ECCE is configuredusing EREGs of a plurality of RB pairs. In the localized transmission,one ECCE is configured using an EREG of one RB pair.

The base station device 1 performs a setting related to the EPDCCH inthe terminal device 2. The terminal device 2 monitors a plurality ofEPDCCHs on the basis of the setting from the base station device 1. Aset of RB pairs that the terminal device 2 monitors the EPDCCH can beset. The set of RB pairs is also referred to as an EPDCCH set or anEPDCCH-PRB set. One or more EPDCCH sets can be set in one terminaldevice 2. Each EPDCCH set includes one or more RB pairs. Further, thesetting related to the EPDCCH can be individually performed for eachEPDCCH set.

The base station device 1 can set a predetermined number of EPDCCH setsin the terminal device 2. For example, up to two EPDCCH sets can be setas an EPDCCH set 0 and/or an EPDCCH set 1. Each of the EPDCCH sets canhe constituted by a predetermined number of RB pairs. Each EPDCCH setconstitutes one set of ECCEs. The number of ECCEs configured in oneEPDCCH set is decided on the basis of the number of RB pairs set as theEPDCCH set and the number of EREGs used in one ECCE. In a case in whichthe number of ECCEs configured in one EPDCCH set is N, each EPDCCH setconstitutes ECCEs 0 to N-1. For example, in a case in which the numberof EREGs used in one ECCE is 4, the EPDCCH set constituted by 4 RB pairsconstitutes 16 ECCEs.

1.6. Technical Features <Details of CA and DC in Present Embodiment>

A plurality of cells are set for the terminal device 2, and the terminaldevice 2 can perform multicarrier transmission. Communication in whichthe terminal device 2 uses a plurality of cells is referred to ascarrier aggregation (CA) or dual connectivity (DC). Contents describedin the present embodiment can be applied to each or some of a pluralityof cells set in the terminal device 2. The cell set in the terminaldevice 2 is also referred to as a serving cell. The serving cell can besaid to he a cell in which communication with the terminal device 2 isestablished and data can be transmitted and received.

From the viewpoint of the physical layer, the CA and the DC performcommunication using cells of two or more different frequency bands. Theterminal device 2 supporting the CA and the DC has a function ofsimultaneously receiving signals from two or more cells or a function ofsimultaneously transmitting signals to two or more cells. In the CA, aplurality of serving cells to be set includes one primary cell (PCell)and one or more secondary cells (SCell). One primary cell and one ormore secondary cells can be set in the terminal device 2 that supportsthe CA. The serving cell is a primary cell or a secondary cell.

In the CA, a plurality of serving cells to be set are synchronizedtemporally. Therefore, boundaries of sub frames of the plurality ofcells to be set are lined up. In the CA, the plurality of serving cellsare synchronized temporally so that a difference in a reception timingbetween different serving cells has no influence on the MAC.

The primary cell is a serving cell in which the initial connectionestablishment procedure is performed, a serving cell that the initialconnection re-establishment procedure is started, or a cell indicated asthe primary cell in a handover procedure. The primary cell operates witha primary frequency. The secondary cell can be set after a connection isconstructed or reconstructed. The secondary cell operates with asecondary frequency. Further, the connection is also referred to as anRRC connection.

The DC is an operation in which a predetermined terminal device 2consumes radio resources provided from at least two different networkpoints. The network point is a master base station device master eNB(MeNB)) and a secondary base station device (a secondary eNB (SeNB)). Inthe dual connectivity, the terminal device 2 establishes an RRCconnection through at least two network points. In the dualconnectivity, the two network points may be connected through anon-ideal backhaul.

In the DC, the base station device 1 which is connected to at least anS1-MME and plays a role of a mobility anchor of a core network isreferred to as a master base station device. Further, the base stationdevice 1 which is not the master base station device providingadditional radio resources to the terminal device 2 is referred to as asecondary base station device. A group of serving cells associated withthe master base station device is also referred to as a master cellgroup (MCG). A group of serving cells associated with the secondary basestation device is also referred to as a secondary cell group (SCG). Notethat the group of the serving cells is also referred to as a cell group(CG).

In the DC, the primary cell belongs to the MCG. Further, in the SCG, thesecondary cell corresponding to the primary cell is referred to as aprimary secondary cell (PSCell). A function (capability and performance)equivalent to the PCell (the base station device constituting the PCell)may be supported by the PSCell (the base station device constituting thePSCell). Further, the PSCell may only support some functions of thePCell. For example, the PSCell may support a function of performing thePDCCH transmission using the search space different from the CSS or theUSS. Further, the PSCell may constantly be in an activation state.Further, the PSCell is a cell that can receive the PUCCH.

In the DC, a radio bearer (a date radio bearer (DRB)) and/or a signalingradio bearer (SRB) may be individually allocated through the MeNB andthe SeNB.

In the DC, two types of operations of synchronous DC and asynchronous DCare defined. In the synchronous DC, two CGs to be set are synchronizedtemporally. Therefore, a boundary of the sub frames of the two CGs to beset is lined up. In the synchronous DC, the terminal device 2 can allowa reception timing difference of a maximum of 33 microseconds and atransmission timing difference of a maximum of 35.21 microseconds. Inthe asynchronous DC, two CGs to be set may not be synchronizedtemporally. Therefore, a boundary of the sub frames of the two CGs to beset may not be lined up. In the asynchronous DC, the terminal device 2can allow transmission and reception timing differences of a maximum of500 microseconds.

A duplex mode may be set individually in each of the MCG (PCell) and theSCG (PSCell). The MCG (PCell) and the SCG (PSCell) may not besynchronized with each other. That is, a frame boundary of the MCG and aframe boundary of the SCG may not be matched. A parameter (a timingadvance group (TAG)) for adjusting a plurality of timings may beindependently set in the MCG (PCell) and the SCG (PSCell). In the dualconnectivity, the terminal device 2 transmits the UCI corresponding tothe cell in the MCG only through MeNB (PCell) and transmits the UCIcorresponding to the cell in the SCG only through SeNB (pSCell). In thetransmission of each UCI, the transmission method using the PUCCH and/orthe PUSCH is applied in each cell group.

The PUCCH and the PBCH (MIB) are transmitted only through the PCell orthe PSCell. Further, the PRACH is transmitted only through the PCell orthe PSCell as long as a plurality of TAGs are not set between cells inthe CG.

In the PCell or the PSCell, semi-persistent scheduling (SPS) ordiscontinuous transmission (DRX) may be performed. In the secondarycell, the same DRX as the PCell or the PSCell in the same cell group maybe performed.

In the secondary cell, information/parameter related to a setting of MACis basically share d with the PCell or the PSCell in the same cellgroup. Some parameters may be set for each secondary cell. Some timersor counters may be applied only to the PCell or the PSCell.

In the CA, a cell to which the TDD scheme is applied and a cell to whichthe FDD scheme is applied may be aggregated. In a case in which the cellto which the TDD is applied and the cell to which the FDD is applied areaggregated, the present disclosure can be applied to either the cell towhich the TDD is applied or the cell to which the FDD is applied.

The terminal device 2 transmits information (supportedBandCombination)indicating a combination of bands in which the CA and/or DC is supportedby the terminal device 2 to the base station device 1. The terminaldevice 2 transmits information indicating whether or not simultaneoustransmission and reception are supported in a plurality of serving cellsin a plurality of different bands for each of band combinations to thebase station device 1.

A plurality of serving cells belonging to one CG are communicated by thecarrier aggregation. In a case in which the first serving cell and thesecond serving cell belong to the same cell group, the first servingcell and the second serving cell can be assumed to be operated by thecarrier aggregation. On the other hand, the plurality of CGs arecommunicated by the dual connectivity. In a case in which the servingcells each belong to different CGs, the serving cells can be assumed tobe operated by the DC.

<Details of Resource Allocation in Present Embodiment>

The base station device 1 can use a plurality of methods as a method ofallocating resources of the PDSCH and/or the PUSCH to the terminaldevice 2. The resource allocation method includes dynamic scheduling,semi persistent scheduling, multi sub frame scheduling, and cross subframe scheduling.

In the dynamic scheduling, one DCI performs resource allocation in onesub frame. Specifically, the PDCCH or the EPDCCH in a certain sub frameperforms scheduling for the PDSCH in the sub frame. The PDCCH or theEPDCCH in a certain sub frame performs scheduling for the PUSCH in apredetermined sub frame after the certain sub frame.

In the multi sub frame scheduling, one DCI allocates resources in one ormore sub frames. Specifically, the PDCCH or the EPDCCH in a certain subframe performs scheduling for the PDSCH in one or more sub frames whichare a predetermined number after the certain sub frame. The PDCCH or theEPDCCH in a certain sub frame performs scheduling for the PUSCH in oneor more sub frames which are a predetermined number after the sub frame.The predetermined number can be set to an integer of zero or more. Thepredetermined number may be specified in advance and may be decided onthe basis of the signaling of the physical layer and/or the RRCsignaling. In the multi sub frame scheduling, consecutive sub frames maybe scheduled, or sub frames with a predetermined period may bescheduled. The number of sub frames to be scheduled may be specified inadvance or may be decided on the basis of the signaling of the physicallayer and/or the RRC signaling.

In the cross sub frame scheduling, one DCI allocates resources in onesub frame. Specifically, the PDCCH or the EPDCCH in a certain sub frameperforms scheduling for the PDSCH in one sub frame which is apredetermined number after the certain sub frame. The PDCCH or theEPDCCH in a certain sub frame performs scheduling for the PUSCH in onesub frame which is a predetermined number after the sub frame. Thepredetermined number can be set to an integer of zero or more. Thepredetermined number may be specified in advance and may be decided onthe basis of the signaling of the physical layer and/or the RRCsignaling. In the cross sub frame scheduling, consecutive sub frames maybe scheduled, or sub frames with a predetermined period may bescheduled.

In the semi-persistent scheduling (SPS), one DCI allocates resources inone or more sub frames. In a case in which information related to theSPS is set through the RRC signaling, and the PDCCH or the EPDCCH foractivating the SPS is detected, the terminal device 2 activates aprocess related to the SPS and receives a predetermined PDSCH and/orPUSCH on the basis of a setting related to the SPS. In a case in whichthe PDCCH or the EPDCCH for releasing the SPS is detected when the SPSis activated, the terminal device 2 releases (inactivates) the SPS andstops reception of a predetermined PDSCH and/or PUSCH. The release ofthe SPS may be performed on the basis of a case in which a predeterminedcondition is satisfied. For example, in a case in which a predeterminednumber of empty transmission data is received, the SPS is released. Thedata empty transmission for releasing the SPS corresponds to a MACprotocol data unit (PDU) including a zero MAC service data unit (SDU).

Information related to the SPS by the RRC signaling includes an SPSC-RNTI which is an SPN RNTI, information related to a period (interval)in which the PDSCH is scheduled, information related to a period(interval) in which the PUSCH is scheduled, information related to asetting for releasing the SPS, and/or a number of the HARQ process inthe SPS. The SPS is supported only in the primary cell and/or theprimary secondary cell.

<Details of LTE Downlink Resource Element Mapping in Present Embodiment>

FIG. 10 is a diagram illustrating an example of LTE downlink resourceelement mapping in the present embodiment. In this example, a set ofresource elements in one resource block pair in a case in which oneresource block and the number of OFDM symbols in one slot are 7 will bedescribed. Further, seven OFDM symbols in a first half in the timedirection in the resource block pair are also referred to as a slot 0 (afirst slot). Seven OFDM symbols in a second half in the time directionin the resource block pair are also referred to as a slot 1 (a secondslot). Further, the OFDM symbols in each slot (resource block) areindicated by OFDM symbol number 0 to 6. Further, the sub carriers in thefrequency direction in the resource block pair are indicated by subcarrier numbers 0 to 11. Further, in a case in which a system bandwidthis constituted by a plurality of resource blocks, a different subcarrier number is allocated over the system bandwidth. For example, in acase in which the system bandwidth is constituted by six resourceblocks, the sub carriers to which the sub carrier numbers 0 to 71 areallocated are used. Further, in the description of the presentembodiment, a resource element (k, 1) is a resource element indicated bya sub carrier number k and an OFDM symbol number 1.

Resource elements indicated by R 0 to R 3 indicate cell-specificreference signals of the antenna ports 0 to 3, respectively.Hereinafter, the cell-specific reference signals of the antenna ports 0to 3 are also referred to as cell-specific RSs (CRSs). In this example,the case of the antenna ports in which the number of CRSs is 4 isdescribed, but the number thereof can be changed. For example, the CRScan use one antenna port or two antenna ports. Further, the CRS canshift in the frequency direction on the basis of the cell ID. Forexample, the CRS can shift in the frequency direction on the basis of aremainder obtained by dividing the cell ID by 6.

Resource element indicated by C1 to C4 indicates reference signals(CSI-RS) for measuring transmission path states of the antenna ports 15to 22. The resource elements denoted by C1 to C4 indicate CSI-RSs of aCDM group 1 to a CDM group 4, respectively. The CSI-RS is constituted byan orthogonal sequence (orthogonal code) using a Walsh code and ascramble code using a pseudo random sequence. Further, the CSI-RS iscode division multiplexed using an orthogonal code such as a Walsh codein the CDM group. Further, the CSI-RS is frequency-division multiplexed(FDM) mutually between the CDM groups.

The CSI-RSs of the antenna ports 15 and 16 are mapped to C1. The CSI-RSsof the antenna ports 17 and 18 is mapped to C2. The CSI-RSs of theantenna port 19 and 20 are mapped to C3. The CSI-RSs of the antenna port21 and 22 are mapped to C4.

A plurality of antenna ports of the CSI-RSs are specified. The CSI-RScan he set as a reference signal corresponding to eight antenna ports ofthe antenna ports 15 to 22. Further, the CSI-RS can be set as areference signal corresponding to four antenna ports of the antennaports 15 to 18. Further, the CSL-RS can be set as a reference signalcorresponding to two antenna ports of the antenna ports 15 to 16.Further, the CSI-RS can be set as a reference signal corresponding toone antenna port of the antenna port 15. The CSI-RS can be mapped tosome sub frames, and, for example, the CSI-RS can be mapped for everytwo or more sub frames. A plurality of mapping patterns are specifiedfor the resource element of the CSI-RS. Further, the base station device1 can set a plurality of CSI-RSs in the terminal device 2.

The CSI-RS can set transmission power to zero. The CSI-RS with zerotransmission power is also referred to as a zero power CSI-RS. The zeropower CSI-RS is set independently of the CSI-RS of the antenna ports 15to 22. Further, the CSI-RS of the antenna ports 15 to 22 is alsoreferred to as a non-zero power CSI-RS.

The base station device 1 sets CSI-RS as control information specific tothe terminal device 2 through the RRC signaling. In the terminal device2, the CSI-RS is set through the RRC signaling by the base stationdevice 1. Further, in the terminal device 2, the CSI-IM resources whichare resources for measuring interference power can be set. The terminaldevice 2 generates feedback information using the CRS, the and/or theCSI-IM resources on the basis of a setting from the base station device1.

Resource elements indicated by D1 to D2 indicate the DL-DMRSs of the CDMgroup 1 and the CDM group 2, respectively. The DL-DMRS is constitutedusing an orthogonal sequence (orthogonal code) using a Walsh code and ascramble sequence according to a pseudo random sequence. Further, theDL-DMRS is independent for each antenna port and can be multiplexedwithin each resource block pair. The DL-DMRSs are in an orthogonalrelation with each other between the antenna ports in accordance withthe CDM and/or the FDA Each of DL-DMRSs undergoes the CDM in the CDMgroup in accordance with the orthogonal codes. The DL-DMRSs undergo theFDM with each other between the CDM groups. The DL-DMRSs in the same CDMgroup are mapped to the same resource element. For the DL-DMRSs in thesame CDM group, different orthogonal sequences are used between theantenna ports, and the orthogonal sequences are in the orthogonalrelation with each other. The DL-DMRS for the PDSCH can use some or allof the eight antenna ports (the antenna ports 7 to 14). In other words,the PDSCH associated with the DL-DMRS can perform MIMO transmission ofup to 8 ranks. The DL-DMRS for the EPDCCH can use some or all of thefour antenna ports (the antenna ports 107 to 110). Further, the DL-DMRScan change a spreading code length of the CDM or the number of resourceelements to be mapped in accordance with the number of ranks of anassociated channel.

The DL-DMRS for the PDSCH to be transmitted through the antenna ports 7,8, 11, and 13 are mapped to the resource element indicated by D1. TheDL-DMRS for the PDSCH to be transmitted through the antenna ports 9, 10,12, and 14 are mapped to the resource element indicated by D2. Further,the DL-DMRS for the EPDCCH to be transmitted through the antenna ports107 and 108 are mapped to the resource element indicated by D1. TheDL-DMRS for the EPDCCH to be transmitted through the antenna ports 109and 110 are mapped to the resource element denoted by D2.

<Details of Downlink Resource Elements Mapping of NR in PresentEmbodiment>

FIG. 11 is a diagram illustrating an example of the downlink resourceelement mapping of NR according to the present embodiment. FIG. 11illustrates a set of resource elements in the predetermined resources ina case in which parameter set 0 is used. The predetermined resourcesillustrated in FIG. 11 are resources formed by a time length and afrequency bandwidth such as one resource block pair in LTE.

In NR, the predetermined resource is referred to as an NR resource block(NR-RB). The predetermined resource can be used for a unit of allocationof the NR-PDSCH or the NR-PDCCH, a unit in which mapping of thepredetermined channel or the predetermined signal to a resource elementis defined, or a unit in which the parameter set is set.

In the example of FIG. 11, the predetermined resources include 14 OFDMsymbols indicated by OFDM symbol numbers 0 to 13 in the time directionand 12 sub carriers indicated by sub carrier numbers 0 to 11 in thefrequency direction. In a case in which the system bandwidth includesthe plurality of predetermined resources, sub carrier numbers areallocated throughout the system bandwidth.

Resource elements indicated by C1 to C4 indicate reference signals(CSI-RS) for measuring transmission path states of the antenna ports 15to 22. Resource elements indicated by D1 and D2 indicate DL-DMRS of CDMgroup 1 and CDM group 2, respectively.

FIG. 12 is a diagram illustrating an example of the downlink resourceelement mapping of NR according to the present embodiment. FIG. 12illustrates a set of resource elements in the predetermined resources ina case in which parameter set 1 is used. The predetermined resourcesillustrated in FIG. 12 are resources formed by the same time length andfrequency bandwidth as one resource block pair in LTE.

In the example of FIG. 12, the predetermined resources include 7 OFDMsymbols indicated by OFDM symbol numbers 0 to 6 in the time directionand 24 sub carriers indicated by sub carrier numbers 0 to 23 in thefrequency direction. In a case in which the system bandwidth includesthe plurality of predetermined resources, sub carrier numbers areallocated throughout the system bandwidth.

Resource elements indicated by C1 to C4 indicate reference signals(CSI-RS) for measuring transmission path states of the antenna ports 15to 22. Resource elements indicated by D1 and D2 indicate DL-DMRS of CDMgroup 1 and CDM group 2, respectively.

FIG. 13 is a diagram illustrating an example of the downlink resourceelement mapping of NR according to the present embodiment. FIG. 13illustrates a set of resource elements in the predetermined resources ina case in which parameter set 1 is used. The predetermined resourcesillustrated in FIG. 13 are resources formed by the same time length andfrequency bandwidth as one resource block pair in LTE.

In the example of FIG. 13, the predetermined resources include 28 OFDMsymbols indicated by OFDM symbol numbers 0 to 27 in the time directionand 6 sub carriers indicated by sub carrier numbers 0 to 6 in thefrequency direction. In a case in which the system bandwidth includesthe plurality of predetermined resources, sub carrier numbers areallocated throughout the system bandwidth.

Resource elements indicated by C1 to C4 indicate reference signals(CSI-RS) for measuring transmission path states of the antenna ports 15to 22. Resource elements indicated by D1 and D2 indicate DL-DMRS of CDMgroup 1 and CDM group 2, respectively.

<Details of Self-Contained Transmission of NR in Present Embodiment>

FIG. 14 illustrates an example of a frame configuration of theself-contained transmission in the present embodiment. In theself-contained transmission, single transceiving includes successivedownlink transmission, a GP, and successive downlink transmission fromthe head in this order. The successive downlink transmission includes atleast one piece of downlink control information and a downlink RS (forexample, the DMRS). The downlink control information gives aninstruction to receive a downlink physical channel included in thesuccessive downlink transmission and to transmit an uplink physicalchannel included in the successive uplink transmission. In a case inwhich the downlink control information gives an instruction to receivethe downlink physical channel, the terminal device 2 attempts to receivethe downlink physical channel on the basis of the downlink controlinformation. Then, the terminal device 2 transmits success or failure ofreception of the downlink physical channel (decoding success or failure)by an uplink control channel included in the uplink transmissionallocated after the GP. On the other hand, in a case in which thedownlink control information gives an instruction to transmit the uplinkphysical channel, the uplink physical channel transmitted on the basisof the downlink control information is included in the uplinktransmission to be transmitted. In this way by flexibly switchingbetween transmission of uplink data and transmission of downlink data bythe downlink control information, it is possible to take countermeasuresinstantaneously to increase or decrease a traffic ratio between anuplink and a downlink. Further, by notifying of the success or failureof the reception of the downlink by the uplink transmission immediatelyafter the success or failure of reception of the downlink, it ispossible to realize low-delay communication of the downlink.

A unit slot time is a minimum time unit in which downlink transmission,a GP, or uplink transmission is defined. The unit slot time is reservedfor one of the downlink transmission, the GP, and the uplinktransmission. In the unit slot time, neither the downlink transmissionnor the uplink transmission is included. The unit slot time may be aminimum transmission time of a channel associated with the DMRS includedin the unit slot time. One unit slot time is defined as, for example, aninteger multiple of a sampling interval (T_(s)) or the symbol length ofNR.

The unit frame time may be a minimum time of transmission or receptionof a physical channel instructed by one piece of scheduling information.The unit frame time may be a minimum time in which a transport block istransmitted. The unit slot time may be a maximum transmission time of achannel associated with the DMRS included in the unit slot time. Theunit frame time may be a time unit (uplink time unit) in which theuplink transmission power in the terminal device 2 is decided. The unitframe time may be referred to as a sub frame. In the unit frame time,there are three types of only the downlink transmission, only the uplinktransmission, and a combination of the uplink transmission and thedownlink transmission. One unit frame time is defined as, for example,an integer multiple of the sampling interval (T_(s)), the symbol length,or the unit slot time of NR.

A transceiving time is one transceiving time. The transceiving time is atransaction time of data of one downlink, uplink, or sidelink. A time (agap) in which neither the physical channel nor the physical signal inthe link is transmitted may occupy between one transceiving and anothertransceiving. The transceiving time includes a physical channel in whichcontrol information regarding scheduling of the downlink, the uplink, orthe sidelink is transmitted. The transceiving time may include aphysical channel in which the HARQ-ACK to the downlink transport blocktransmitted in the transceiving time is transmitted. The terminal device2 does not average CSI measurement in a different transceiving time. Thetransceiving time may be referred to as TTI. One transceiving time isdefined as, for example, an integer multiple of the sampling interval(T_(s)), the symbol length, the unit slot time, or the unit frame timeof NR.

<Definition of Uplink Transmission Power in Present Embodiment>

In the present embodiment, a time unit (an uplink time unit) serving asa standard on a time axis of calculation and allocation (setting) ofuplink transmission power is defined. The terminal device 2 transmits apredetermined channel using the allocated (set) uplink transmissionpower in a section of the uplink time unit. In the section of the uplinktime unit, the uplink transmission power allocated (set) to apredetermined channel does not increase or decrease. It is difficult forthe terminal device 2 to allocate (set) some or all of the uplinktransmission power which has already been allocated (set) to thepredetermined channel in order to transmit other channels. Note that thebase station device 1 may assume that the uplink transmission power ofthe channel transmitted from the terminal device 2 is invariable in thesection of the uplink time unit.

In the present embodiment, the uplink time unit is defined individuallyfor the CG and/or individually for the serving cell. For example, theuplink time unit is defined individually for the first CG and the secondCG. For example, the uplink time unit is defined individually for theMCG and the SCG. For example, the uplink time unit is definedindividually for the first serving cell and the second serving cell. Forexample, the uplink time unit is defined individually for the primarycell and the secondary cell.

As an example of the uplink time unit, an uplink time unit is a subframe. As an example of definition of the uplink transmission power, theuplink time unit is defined as a common value between different CGsand/or different serving cells. For example, the uplink time unit of theserving cells of the first CG and the second CG is defined as the samevalue as the sub frame length (1 ms) of LTE. For example, the uplinktime unit of the serving cells of the first CG and the second CG isdefined as the same value as the slot length (0.5 ms) of LTE. Forexample, the uplink time unit of the serving cells of the first CG andthe second CG is defined as a value obtained through division by aninteger multiple of the sub frame length (1 ms) of LTE or an integer.For example, the uplink time unit of the serving cells of the first CGand the second CG is defined as the same value as the sub frame lengthof NR. For example, the uplink time unit of the serving cells of thefirst CG and the second CG is defined as a unit frame time. For example,the uplink time unit of the serving cells of the first CG and the secondCG is defined as a minimum unit frame time among unit frame times of aserving cell to be set. For example, the uplink time unit of the servingcells of the first CG and the second CG is defined as a minimum unitframe time among unit frame times of a serving cell in which uplinktransmission occurs. For example, the uplink time unit of the servingcells of the first CG and the second CG is defined as the same length asthe length of a predetermined uplink physical channel of NR (forexample, the PUSCH or the PUCCH of NR). For example, the uplink timeunit of the serving cells of the first CG and the second CG is definedas a value set in a higher layer of RRC signaling or the like. Forexample, the uplink time unit of the serving cells of the first CG andthe second CG is defined as a value instructed from a downlink controlchannel such as DCI. For example, the uplink time unit of the servingcells of the first CG and the second CG is defined as a value instructedfrom a downlink control channel disposed in a common search space. Forexample, the uplink time unit of the serving cells of the first CG andthe second CG is defined as a value designated from information includedin an uplink grant. For example, the uplink time unit of the servingcells of the first CG and the second CG is defined in relation to theUL-DMRS linked with the uplink physical channel to be transmitted. Forexample, the uplink time unit of the serving cells of the first CG andthe second CG is defined as a predetermined number of symbols from asymbol with which the UL-DMRS linked to the uplink physical channel tobe transmitted is transmitted.

As an example of definition of the uplink transmission power, the uplinktime unit between the different CGs and/or the different serving cellsis defined as a different value. For example, the uplink time unit ofthe serving cell of the CG is defined as the same value as the unitframe time or the sub frame length of the CG. For example, the uplinktime unit of the serving cell of the CG is defined as the same value asthe length of a predetermined uplink physical channel (for example, thePUSCH or the PUCCH) transmitted in the CG. For example, the uplink timeunit of the serving cell of the CG is defined as a value set in a higherlayer of the RRC signaling or the like. For example, the uplink timeunit of the serving cell of the CG is defined as a value instructed froma downlink control channel such as the DCI. For example, the uplink timeunit of the serving cell of the CG is defined as a value designated frominformation included in the uplink grant. For example, the uplink timeunit of the serving cell of the CG is defined in relation to the UL-DMRSlinked with the uplink physical channel transmitted in the serving cellof the CG. For example, the uplink time unit of the serving cell of theCG is defined as a predetermined number of symbols from a symbol withwhich the UL-DMRS linked to the uplink physical channel to betransmitted in the serving cell of the CG is transmitted.

Note that the uplink time unit may be applied as different values to acase in which at least one serving cell of NR is set in the terminaldevice 2 and a case in which no serving cell of NR is set in theterminal device 2 (only a serving cell of LTE is set). For example, theuplink time units of the serving cells of the MCG and the SCG aredefined as the same value as a minimum unit frame time among the setserving cells in a case in which at least one serving cell of NR is set,and are defined as the same value as the sub frame length of LTE in acase in which no serving cell of NR is set. For example, the uplink timeunits of the serving cells of the MCG and the SCG are defined as thesame value as a minimum length of the uplink physical channel among theset serving cells in a case in which at least one serving cell of NR isset, and are defined as the same value as the length of the uplinkphysical channel of LTE in a case in which no serving cell of NR is set.

Note that the uplink time unit to be applied in the calculation and theallocation (setting) of the uplink transmission power of the CA and theuplink time unit to be applied in the calculation and the allocation(setting) of the uplink transmission power of the DC may be different,and the foregoing examples can each be applied to the DC and the CA. Forexample, the uplink time unit to be applied in the DC is defined as thesame value as the sub frame length (1 ms) of LTE and the uplink timeunit to be applied in the CA is defined as the same value as the subframe length or the unit frame time of a serving cell in which theuplink physical channel or the SRS occurs. The uplink time unit to beapplied in the DC is referred to as an uplink time unit of the CG andthe uplink time unit to be applied in the CA is referred to as an uplinktime unit of the serving cell.

Note that the uplink time unit to be applied in the calculation and theallocation (setting) of the transmission power of the uplink physicalchannel and the uplink time unit to be applied in the calculation andthe allocation (setting) of the transmission power of the uplinkphysical channel may be different. Further, the uplink time unit may bedifferent in accordance with a type of uplink physical channel or anuplink physical signal. For example, the uplink time unit of the PRACHmay be defined as a value designated in a PDCCH order for giving aninstruction to transmit the PRACH, the uplink time unit of the PUSCH maybe defined as a value designated by an uplink grant, the uplink timeunit of the PUCCH may be defined as a length in which the PUCCH istransmitted, and the uplink time unit of the SRS may be defined as thesame value as the sub frame length.

Note that the uplink time unit may be different between an FDD cell (FDDoperation) and a TDD cell (TDD operation). Note that the uplink timeunit may be different in accordance with a kind of frame configurationtype. Note that the uplink time unit may be different between a celloperated in a licensed band and a cell operated in an unlicensed hand.

Note that a time unit in which maximum uplink transmission power isdefined may have the same length as the uplink time unit. Further, anuplink time unit in which the maximum uplink transmission power isdefined may be defined individually from the uplink time unit for theuplink physical channel and/or the uplink physical signal. For example,the uplink time unit in which the maximum uplink transmission power isdefined may be defined as the same value as the sub frame length (1 ms)of LTE, and the uplink time unit applied in the calculation and theallocation (setting) of the uplink transmission power for the uplinkphysical channel or the SRS may be defined as the same value as the subframe time or the sub frame length of the serving cell in which theuplink physical channel or the SRS occurs.

Note that an uplink physical channel longer than the uplink time unitmay be transmitted. Note that in a case in which one uplink physicalchannel is transmitted, at least one UL-DMRS is preferably included ineach of the plurality of uplink time units in which the uplink physicalchannel is transmitted. Further, the calculation and the allocation(setting) of the uplink transmission power of the uplink physicalchannels in different uplink time units are preferably independent.Thus, the terminal device 2 can flexibly change the uplink transmissionpower even during the transmission of one uplink physical channel.

<Control of Uplink Transmission Power of Carrier Aggregation in PresentEmbodiment>

The terminal device 2 in which the carrier aggregation is set cansimultaneously transmit the plurality of uplink physical channels and/oruplink physical signals from a plurality of serving cells. Thetransmission power of each uplink physical channel and/or uplinkphysical signal is calculated on the basis of control informationincluded in the channel to be transmitted, control information includedin the DCI used to give an instruction to transmit the channel, apropagation path attenuation value of a downlink, setting from a higherlayer, and the like.

On the other hand, in the terminal device 2, maximum power with whichthe uplink physical channel and/or the uplink physical signal can betransmitted (maximum uplink transmission power: P_(CMAX)) is defined foreach uplink time unit. The transmission power of each uplink physicalchannel and/or uplink physical signal is decided so that thetransmission power does not exceed the maximum uplink transmissionpower. Specifically, in a case in which a sum of power requested by theuplink physical channel and/or the uplink physical signal exceeds themaximum uplink transmission power, the transmission power of each uplinkphysical channel and/or uplink physical signal is scaled using a scalingfactor that takes a value between 0 and 1 so that the transmission powerdoes not exceed the maximum uplink transmission power.

A method of scaling the transmission power of the uplink physicalchannels and/or the uplink physical signals in a case in which theuplink time units of all the serving cells set in the terminal device 2are the same will be described.

In a case in which the PUSCHs simultaneously occur in a plurality ofserving cells and a sum of transmission power requested by the PUSCHsexceeds the maximum uplink transmission power, the transmission powerallocated to each PUKE is reduced at an equal ratio between the servingcells. In a case in which the PUCCHs and PUSCHs simultaneously occur inone or more serving cells and a sum of transmission power requested bythe PUCCHs and the PUSCHs exceeds the maximum uplink transmission power,the transmission power allocated to each PUSCH is reduced at an equalratio between the serving cells within a range in which the transmissionpower does not exceed surplus power after the transmission powerrequested by the PUCCHs is ensured. In a case in which the PUSCHs withthe UCI and the PUSCH with no UCI simultaneously occur in one or moreserving cells and a sum of transmission power requested by the PUSCHsexceeds the maximum uplink transmission power, the transmission powerallocated to each PUSCH with no UCI is reduced at an equal ratio betweenthe serving cells within a range in which the transmission power doesnot exceed surplus power after the transmission power requested by thePUSCHs with the UCI is ensured. Similarly, in a case in which the SRSsoccur in a plurality of serving cells and a sum of transmission powerrequested by the SRSs exceeds the maximum uplink transmission power, thetransmission power allocated to each SRS is also reduced at an equalratio between the serving cells. Note that in a case in whichtransmission of the PUSCHs with no UCI occurs in a predetermined servingcell and a sum of transmission power requested by the uplink physicalchannels exceeds the maximum uplink transmission power, the transmissionpower of the PUSCHs in the predetermined serving cell may not heallocated (0 may be allocated).

A specific example of the method of scaling the transmission power ofthe uplink physical channels and/or the uplink physical signals in acase in which the uplink time units of all the serving cells set in theterminal device 2 are the same is illustrated in FIGS. 15 and 16. FIGS.15 and 16 are diagrams illustrating an example of a case in which theuplink physical channels are the PUSCHs. FIG. 15 illustrates an examplein which a serving cell 1 and a serving cell 2 with the same uplink timeunit are operated by the CA. Transmission power necessary in the PUSCHof the serving cell 1 in an uplink time unit i is assumed to beP_(PUSCH,1)(i). Similarly, transmission power necessary in the PUSCH ofthe serving cell 2 in the uplink time unit i is assumed to beP_(PUSCH,2)(i) and transmission power necessary in the PUSCH of theserving cell c in the uplink time unit i is assumed to beP_(PUSCH,c)(i).

FIG. 16 illustrates a procedure of the allocation (setting) of actualtransmission power of the PUSCHs in a case in which the PUSCHssimultaneously occur in the serving cell c in a section of the uplinktime unit i. First, the terminal device 2 calculates the powerP_(PUSCH,c)(i) necessary to transmit the PUSCHs in the uplink time uniti of the serving cell c (S1601). Then, a value obtained by summing thepower necessary to transmit the PUSCHs in the serving cell is compare dto a value of the maximum uplink transmission power P_(CMAX)(i) of theterminal device 2 in the uplink time unit i (S1602). That is, thecomparison based on a calculation expression shown in the following(Expression 1) is performed.

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 1} \right\rbrack \mspace{509mu}} & \; \\{{\sum\limits_{c \in C}^{\;}{P_{{PUSCH},c}(i)}} \leq {P_{CMAX}(i)}} & \left( {{Expression}\mspace{14mu} 1} \right)\end{matrix}$

In a case in which the value obtained by summing the power necessary totransmit the PUSCHs in the serving cell does not exceed P_(CMAX)(i) (YESin S1602), final transmission power P′_(PUSCH,C)(i) of the PUSCHs can beallocated as the power P_(PUSCH,c)(i) necessary to transmit the PUSCHs(S1603). Conversely, in a case in which the value obtained by summingthe power necessary to transmit the PUSCHs in the serving cell exceedsP_(CMAX)(i) (NO in S1601), a scaling factor w(i) is decided as a valueof 0 to 1 so that a value obtained by summing values obtained bymultiplying the power P_(PUSCH,c)(i) necessary to transmit the PUSCHs inthe serving cell by the scaling factor w(i) in the uplink time unit idoes not exceed P_(CMAX)(i) (S1604). That is, the scaling factor w(i) isdecided so that a conditional expression shown in the following(Expression 2) is satisfied.

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 2} \right\rbrack \mspace{509mu}} & \; \\{{\sum\limits_{c \in C}^{\;}{{w(i)} \cdot {P_{{PUSCH},c}(i)}}} \leq {P_{CMAX}(i)}} & \left( {{Expression}\mspace{14mu} 2} \right)\end{matrix}$

Then, the final transmission power P′_(PUSCH,c)(i) of the PUSCHs isallocated as a value obtained by multiplying the power P_(PUSCH,c)(i)necessary to transmit the PUSCHs by the scaling factor w(i) (S1605).

Further, a first example of the method of scaling the transmission powerof the uplink physical channels and/or the uplink physical signals in acase in which the uplink time units of at least two serving cells set inthe terminal device 2 are different will be described. In a case inwhich the heads of the uplink physical channels and/or the uplinkphysical signals occurring in each serving cell are aligned, the samemethod as the method of scaling the transmission power of the uplinkphysical channels and/or the uplink physical signals in a case in whichthe uplink time units of all the serving cells set in the terminaldevice 2 are the same is used. Conversely, in a case in which the headsof the uplink physical channels and/or the uplink physical signalsoccurring in each serving cell are not aligned, the transmission poweris scaled within a range in which the transmission power does not exceedsurplus power obtained by subtracting the uplink transmission powerwhich has already been allocated to the uplink physical channels and/orthe uplink physical signals from the maximum uplink transmission power.In other words, in the first example, the uplink transmission power isallocated (set) in an earlier order of the head of the uplink time unit.

A specific example of the first example of the method of scaling thetransmission power of the uplink physical channels and/or the uplinkphysical signals in a case in which the uplink time units of at leasttwo serving cells set in the terminal device 2 are different isillustrated in FIGS. 17 and 18. FIG. 17 illustrates an example in whichthe serving cell 1 and the serving cell 2 with different uplink timeunits and the serving cell c are operated by the CA. Note that c is anynatural number and the serving cell c indicates one set serving cell.Since the serving cells 1 and 2 and the serving cell c are synchronizedon the time axis, a timing of a boundary of the uplink time unit of oneserving cell 1 is aligned with a timing of a boundary of the uplink timeunit of any serving cell 2 or a boundary of the uplink time unit of theserving cell c. Further, the uplink time unit of the serving cell 1 isan integer multiple of the uplink time unit of the serving cell 2. Inthis example, the uplink time unit of the serving cell 1 is twice theuplink unit time of the serving cell 2. When the uplink time unit of theserving cell 1 is defined as an uplink time unit i1, a first uplink timeunit of the serving cell 2 overlapping the uplink time unit i1 can bedefined as an uplink time unit i2 and each second uplink time unit ofthe serving cell 2 and the serving cell c can be defined as an uplinktime unit i2+1. The transmission power necessary for the PUSCH of theserving cell 1 in the uplink time unit i1 is assumed to beP_(PUSCH,1)(i1). Similarly, the transmission power necessary for thePUSCH of the serving cell 2 in the uplink time unit i2 is assumed to beP_(PUSCH,2)(i2) and the transmission power necessary for the PUSCH ofthe serving cell c in the uplink time unit i2 is assumed to beP_(PUSCH,c)(i2). Furthermore, the transmission power necessary for thePUSCH of the serving cell 2 in the uplink time unit i2+1 is assumed tobe P_(PUSCH,2)(i2+1) and the transmission power necessary for the PUSCHof the serving cell c in the uplink time unit i2+1 is assumed to beP_(PUSCH,c)(i2+1).

FIG. 18 illustrates an example of a procedure of the allocation(setting) of actual transmission power of the PUSCHS in a case in whichthe PUSCHs simultaneously occur in the serving cell c in a section ofthe uplink time unit i1. First, the terminal device 2 calculates thepower P_(PUSCH,c)(i1) and P_(PUSCH,c)(i2) necessary to transmit thePUSCHs in the uplink time unit i of the serving cell c (S1801). Then, avalue obtained by summing the power necessary to transmit the PUSCHs inthe serving cell is compare d to a value of the maximum uplinktransmission power P_(CMAX)(i1) of the terminal device 2 in the uplinktime unit i1 (S1802). That is, the comparison based on a calculationexpression shown in the following (Expression 3) is performed.

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 3} \right\rbrack \mspace{509mu}} & \; \\{{{\sum\limits_{c \in {C\; 1}}^{\;}{P_{{PUSCH},c}\left( {i\; 1} \right)}} + {\sum\limits_{c \in {C\; 2}}^{\;}{P_{{PUSCH},c}\left( {i\; 2} \right)}}} \leq {P_{CMAX}\left( {i\; 1} \right)}} & \left( {{Expression}\mspace{14mu} 3} \right)\end{matrix}$

Here, C1 is a set of serving cells with the same length of the uplinktime unit as the serving cell 1 and C2 is a set of serving cells withthe same length of the uplink time unit as the serving cell 2. In a casein which the value obtained by summing the power necessary to transmitthe PUSCHs in the serving cell does not exceed P_(CMAX)(i1) (YES inS1802), final transmission power P′_(PUSCH,C)(i1) of the PUSCHs can beallocated as power P_(PUSCH,c)(i1) necessary to transmit the PUSCHs, andfinal transmission power P′_(PUSCH,C)(i2) of the PUSCHs can be allocatedas the power P_(PUSCH,c)(i2) necessary to transmit the PUSCHs (S1803).Conversely, in a case in which the value obtained by summing the powernecessary to transmit the PUSCHs in the serving cell exceedsP_(CMAX)(i1) (NO in S1802), a scaling factor w(i1) is decided as a valueof 0 to 1 so that a value obtained by summing values obtained bymultiplying the power necessary to transmit the PUSCHs in the servingcell by the scaling factor w(i1) in the uplink time unit i does notexceed P_(CMAX)(i1) (S1804). That is, the scaling factor w(i1) isdecided so that a conditional expression shown in the following(Expression 4) is satisfied.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 4} \right\rbrack & \; \\{{{\sum\limits_{c \in {C\; 1}}^{\;}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 1} \right)}}} + {\sum\limits_{c \in {C\; 2}}^{\;}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 2} \right)}}}} \leq {P_{CMAX}\left( {i\; 1} \right)}} & \left( {{Expression}\mspace{14mu} 4} \right)\end{matrix}$

Then, the final transmission power P′_(PUSCH,c)(i1) of the PUSCHs isallocated as a value obtained by multiplying the power P_(PUSCH,c)(i1)necessary to transmit the PUSCHs by a scaling factor w(i1) and the finaltransmission power P′_(PUSCH,c)(i2) of the PUSCHs is allocated as avalue obtained by multiplying the power P_(PUSCH,c)(i2) necessary totransmit the PUSCHs by the scaling factor w(i1) (S1805).

Subsequently, the terminal device 2 calculates the powerP_(PUSCH,c)(i2+1) necessary to transmit the PUSCHs in the uplink timeunit i2+1 of the serving cell c (S1806). Then, a value obtained bysumming the power necessary to transmit the PUSCHs in the serving cellis compare d to a value obtained by subtracting a sum of the finaltransmission power P′_(CMAX,c)(i) of the earlier allocated PUSCHs fromthe maximum uplink transmission power P_(CMAX)(i1) of the terminaldevice 2 in the uplink time unit i1 (S1807). That is, the comparisonbased on a calculation expression shown in the following (Expression 5)is performed.

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 5} \right\rbrack \mspace{509mu}} & \; \\{{\sum\limits_{c \in {C\; 2}}^{\;}{P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}} \leq {{P_{CMAX}\left( {i\; 1} \right)} - {\sum\limits_{c \in {C\; 1}}^{\;}{P_{{PUSCH},c}^{\prime}\left( {i\; 1} \right)}}}} & \left( {{Expression}\mspace{14mu} 5} \right)\end{matrix}$

In a case in which the value obtained by summing the power necessary totransmit the PUSCHs in the serving cell does not exceed a value obtainedby subtracting the sum of P′_(PUSCH,c)(i1) from P_(CMAX)(i1) (YES inS1807), final transmission power P′_(PUSCH,C)(i2+1) of the PUSCHs can beallocated as the power P_(PUSCH,c)(i2+1) necessary to transmit thePUSCHs (S1808). Conversely, in a case in which the value obtained bysumming the power necessary to transmit the PUSCHs in the serving cellexceeds the value obtained by subtracting the sum of P′_(PUSCH,c)(i1)from P_(CMAX)(i1) (NO in S1807), a scaling factor w(i2+1) is decided asa value of 0 to 1 so that a value obtained by summing values obtained bymultiplying the power P_(PUSCH,c)(i2+1) necessary to transmit the PUSCHsin the serving cell by the scaling factor w(i2+1) in the uplink timeunit i2+1 does not exceed the value obtained by subtracting the sum ofP′_(PUSCH,c)(i1) from P_(CMAX)(i1) (S1809). That is, the scaling factorw(i2+1) is decided so that a conditional expression shown in thefollowing (Expression 6) is satisfied.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 6} \right\rbrack & \; \\{{\sum\limits_{c \in {C\; 2}}^{\;}{{w\left( {{i\; 2} + 1} \right)} \cdot {P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}}} \leq {{P_{CMAX}\left( {i\; 1} \right)} - {\sum\limits_{c \in {C\; 1}}^{\;}{P_{{PUSCH},c}^{\prime}\left( {i\; 1} \right)}}}} & \left( {{Expression}\mspace{14mu} 6} \right)\end{matrix}$

Then, the final transmission power P′_(PUSCH,c)(i2+1) of the PUSCHs isallocated as a value obtained by multiplying the power P_(PUSCH,c)(i2+1)necessary to transmit the PUSCHs by the scaling factor w(i2+1) (S1810).

Further, a second example of the method of scaling the transmissionpower of the uplink physical channels and/or the uplink physical signalsin a case in which the uplink time units of at least two serving cellsset in the terminal device 2 are different will be described. Thetransmission power of the uplink physical channels and/or the uplinkphysical signal occurring in each serving cell is calculated orallocated (set) using the maximum uplink time unit in the set servingcell as a standard. In a predetermined serving cell, in a case in whicha plurality of uplink physical channels occur in the uplink time unitused as the standard, the terminal device 2 compare s the values of theuplink transmission power requested by the plurality of uplink physicalchannels and acquires the maximum transmission power requested by theuplink physical channel of the serving cell. Then, in a case in whichthe sum of the maximum transmission power requested by the serving cellexceeds the maximum uplink transmission power of the terminal device 2,a scaling factor is decided so that the transmission power does notexceed the maximum uplink transmission power of the terminal device 2and the uplink physical channels and/or the uplink physical signals arescaled using the scaling factor. In other words, in the second example,the transmission power is allocated (set) using the uplink transmissionoccurring in a serving cell in which the uplink time unit is the longestas the standard, by simultaneously considering the uplink transmissionof other serving cells overlapping the uplink transmission.

FIG. 19 illustrates a specific example of the second example of themethod of scaling the transmission power of the uplink physical channelsand/or the uplink physical signals in a case in which the uplink timeunits of at least two serving cells set in the terminal device 2 aredifferent. Note that in a case in which the uplink time units of twoserving cells are different, the same case as the first example isassumed.

FIG. 19 illustrates an example of a procedure of the allocation(setting) of actual transmission power of the PUSCHs in a case in whichthe PUSCHs simultaneously occur in the serving cell c in a section ofthe uplink time unit i1. First, the terminal device 2 calculates powerP_(PUSCH,c)(i1), P_(PUSCH,c)(i2), and P_(PUSCH,c)(i2+1) necessary totransmit the PUSCHs in the serving cell c (S1901). Then, a valueobtained by summing maximum values max (P_(PUSCH,c)(i2) andP_(PUSCH,c)(i2+1)) of power necessary to transmit the PUSCHs in theserving cell occurring in the section of the uplink time unit i1 of eachserving cell is compare d to a value of the maximum uplink transmissionpower P_(CMAX)(i1) of the terminal device 2 in the uplink time unit i1(S1902). That is, the comparison based on a calculation expression shownin the following (Expression 7) is performed.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 7} \right\rbrack & \; \\{{{\sum\limits_{c \in {C\; 1}}^{\;}{P_{{PUSCH},c}\left( {i\; 1} \right)}} + {\sum\limits_{c \in {C\; 2}}^{\;}{\max \left( {{P_{{PUSCH},c}\left( {i\; 2} \right)},{P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}} \right)}}} \leq {P_{CMAX}\left( {i\; 1} \right)}} & \left( {{Expression}\mspace{14mu} 7} \right)\end{matrix}$

In a case in which the value obtained by summing the maximum values max(P_(PUSCH,c)(i2) and P_(PUSCH,c)(i1+1)) of the power necessary totransmit the PUSCHs in the serving cell occurring in the section of theuplink time unit i1 of each serving cell does not exceed P_(CMAX)(i1)(YES in S1902), final transmission power P′_(PUSCH,C)(i1),P′_(PUSCH,C)(i2), and P′_(PUSCH,C)(i2+1) of the PUSCHs can be allocatedas power P_(PUSCH,c)(i1), P_(PUSCH,c)(i2), and P_(PUSCH,c)(i2+1)necessary to transmit the PUSCHs (S1903). Conversely, in a case in whichthe value obtained by summing the maximum values max (P_(PUSCH,c)(i2)and P_(PUSCH,c)(i2+1)) of the power necessary to transmit the PUSCHs inthe serving cell occurring in the section of the uplink time unit i1 ofeach serving cell exceeds P_(CMAX)(i1) (NO in S1902), the scaling factorw(i1) is decided as a value of 0 to 1 so that a value obtained bysumming values obtained by multiplying the maximum values of the powernecessary to transmit the PUSCHs of each serving cell by the scalingfactor w(i1) in the uplink time unit i1 in the serving cell does notexceed P_(CMAX)(i1) (S1904). That is, the scaling factor w(i1) isdecided so that a conditional expression shown in the following(Expression 8) is satisfied.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 8} \right\rbrack & \; \\{{{\sum\limits_{c \in {C\; 1}}^{\;}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 1} \right)}}} + {\sum\limits_{c \in {C\; 2}}^{\;}{{w\left( {i\; 1} \right)} \cdot {\max \left( {{P_{{PUSCH},c}\left( {i\; 2} \right)},{P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}} \right)}}}} \leq {P_{CMAX}\left( {i\; 1} \right)}} & \left( {{Expression}\mspace{14mu} 8} \right)\end{matrix}$

Then, the final transmission power P′_(PUSCH,c)(i1), P′_(PUSCH,c)(i2),and P′_(PUSCH,c)(i2+1) of the PUSCHs are allocated as values obtained bymultiplying the power P_(PUSCH,c)(i1), the power P_(PUSCH,c)(i2), andthe power P_(PUSCH,c)(i2+1) necessary to transmit the PUSCHs by thescaling factor w(i1) (S1905).

Further, a third example of the method of sealing the transmission powerof the uplink physical channels and/or the uplink physical signals in acase in which the uplink time units of at least two serving cells set inthe terminal device 2 are different will be described. The transmissionpower of the uplink physical channels and/or the uplink physical signaloccurring in each serving cell is calculated or allocated (set) usingthe maximum uplink time unit in the set serving cell as a standard. At apredetermined timing (for example, the minimum uplink time unit in theserving cell), the terminal device 2 calculated a value of the sum inthe serving cell of the uplink transmission power requested by theplurality of uplink physical channels. Then, the value of the maximumsum is compare d to the maximum uplink transmission power in apredetermined section (for example, the maximum uplink time unit in theserving cell). In a case in which this value exceeds the maximum uplinktransmission power, a scaling factor is decided so that the value doesnot exceed the maximum uplink transmission power and the uplink physicalchannels and/or the uplink physical signals are sealed using the sealingfactor. FIG. 20 illustrates a specific example of the third example ofthe method of scaling the transmission power of the uplink physicalchannels and/or the uplink physical signals in a case in which theuplink time units of at least two serving cells set in the terminaldevice 2 are different. Note that in a case in which the uplink timeunits of two serving cells are different, the same case as the firstexample is assumed.

FIG. 20 illustrates an example of a procedure of the allocation(setting) of actual transmission power of the PUSCHs in a case in whichthe PUSCHs simultaneously occur in the serving cell e in the section ofthe uplink time unit First, the terminal device 2 calculates powerP_(PUSCH,c)(i1), P_(PUSCH,c)(i2), and P_(PUSCH,c)(i2+1) necessary totransmit the PUSCHs in the serving cell c (S2001). Then, a maximum valuein the section of the uplink time unit it among values obtained bysumming power necessary to transmit the PUSCHs in the serving cell atpredetermined timings (the uplink time unit i2 and the uplink time uniti2+1) is compare d to a value of the maximum uplink transmission powerP_(CMAX)(i1) of the terminal device 2 in the uplink time unit i1(S2002). That is, the comparison based on a calculation expression shownin the following (Expression 9) is performed.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 9} \right\rbrack & \; \\{\max\left( {{{\overset{\;}{\sum\limits_{c \in {C\; 1}}}{P_{{PUSCH},c}\left( {i\; 1} \right)}} + {\sum\limits_{c \in {C\; 2}}^{\;}{P_{{PUSCH},c}\left( {i\; 2} \right)}}},} \right.} & \left( {{Expression}\mspace{14mu} 9} \right) \\{\left. {{\sum\limits_{c \in {C\; 1}}{P_{{PUSCH},c}\left( {i\; 1} \right)}} + {\sum\limits_{c \in {C\; 2}}{P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}}} \right) \leq {P_{CMAX}\left( {i\; 1} \right)}} & \;\end{matrix}$

In a case in which the maximum value does not exceed P_(CMAX)(i1) (YESin S2002), final transmission power P′_(PUSCH,C)(i1), P′_(PUSCH,C)(i2),and P′_(PUSCH,C)(i2+1) of the PUSCHs can be allocated as powerP_(PUSCH,c)(i1), P_(PUSCH,c)(i2), and P_(PUSCH,c)(i2+1) necessary totransmit the PUSCHs (S2003). Conversely, in a case in which the maximumvalue exceeds P_(CMAX)(i1) (NO in S2002), the scaling factor w(i1) isdecided as a value of 0 to 1 so that the maximum value in the section ofthe sub frame i1 among values obtained by multiplying the valuesobtained by summing the power necessary to transmit the PUSCHs in theserving cell at the predetermined timings (the uplink time unit i2 andthe uplink time unit i2+1) by the scaling factor w(i1) in the uplinktime unit i1 does not exceed P_(CMAX)(i1) (S2004). That is, the scalingfactor w(i1) is decided so that a conditional expression shown in thefollowing (Expression 10) is satisfied.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 10} \right\rbrack & \; \\{\max\left( {{{\overset{\;}{\sum\limits_{c \in {C\; 1}}}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 1} \right)}}} + {\sum\limits_{c \in {C\; 2}}^{\;}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 2} \right)}}}},} \right.} & \left( {{Expression}\mspace{14mu} 10} \right) \\{\left. {{\sum\limits_{c \in {C\; 1}}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {i\; 1} \right)}}} + {\sum\limits_{c \in {C\; 2}}{{w\left( {i\; 1} \right)} \cdot {P_{{PUSCH},c}\left( {{i\; 2} + 1} \right)}}}} \right) \leq {P_{CMAX}\left( {i\; 1} \right)}} & \;\end{matrix}$

Then, the final transmission power P′_(PUSCH,c)(i1), P′_(PUSCH,c)(i2),and P′_(PUSCH,c)(i2+1) of the PUSCHs are allocated as values obtained bymultiplying the power P_(PUSCH,c)(i1), P_(PUSCH,c)(i2), andP_(PUSCH,c)(i2+1) necessary to transmit the PUSCHs by the scaling factorw(i1) (S2005).

Note that the foregoing examples have been described as specificexamples in a case in which the number of serving cells is 2, but theforegoing methods can he applied even In the case of the CA in which thenumber of serving cells is 3 or more. Further, in the case in which thenumber of serving cells is 3 or more, the foregoing methods can also beswitched and applied. For example, in a case in which the uplinkphysical channels and/or the uplink physical signals to be scaled aretransmitted with the primary cell or the primary and secondary cells,the foregoing first example may be applied. In a case in which theuplink physical channels and/or the uplink physical signals to be scaledare transmitted with only the secondary cell, the foregoing thirdexample may be applied.

Note that in the foregoing examples, the cases in which the two types ofuplink time units with the different lengths are combined in accordancewith the radio frame configuration of FIG. 17 have been described, butthe present disclosure is not limited thereto. For example, theforegoing methods can be applied even to CA with a serving cell in whichan uplink time unit with a length which is a half of the length of theuplink time unit of the serving cell 2 is used.

Note that P_(CMAX)(i1) used above is exemplary and P_(CMAX) may beswitched between the uplink time unit i2 and the uplink time unit i2+1.That is, instead of P_(CMAX)(i1), P_(CMAX)(i2) and P_(CMAX)(i2+1) may beused above.

<Control of Uplink Transmission Power of Dual Connectivity in PresentEmbodiment>

The terminal device 2 in which the dual connectivity is set cansimultaneously transmit the plurality of uplink physical channels and/oruplink physical signals from a plurality of serving cells belonging to aplurality of CGs. The transmission power of each uplink physical channeland/or uplink physical signal is calculated on the basis of controlinformation included in the channel to be transmitted, controlinformation included in the ICI used to give an instruction to transmitthe channel, a propagation path attenuation value of a downlink, settingfrom a higher laver, and the like.

On the other hand, in the terminal device 2, maximum power with whichthe uplink physical channel and/or the uplink physical signal can betransmitted (maximum uplink transmission power: P_(CMAX)) is defined foreach uplink time unit. The transmission power of each uplink physicalchannel and/or uplink physical signal is decided so that thetransmission power does not exceed the maximum uplink transmissionpower. Specifically, in a case in which the sum of the power requestedby the uplink physical channels and/or the uplink physical signalsexceeds the maximum uplink transmission power, the transmission power ofthe uplink physical channels and/or the uplink physical signals isreduced on the basis of the maximum uplink transmission power for eachCG decided in accordance with a DC power control mode.

A method of scaling the transmission power of the uplink physicalchannels and/or the uplink physical signals in a case in which theuplink time units of two types of CGs set in the terminal device 2 arethe same will be described.

In a case in which a plurality of cell groups are set in the terminaldevice 2, the terminal device 2 performs the transmission power controlof the uplink physical channel and/or the uplink physical signal usingDC power control mode 1 or DC power control mode 2. In a case in which asum of transmission power requested by an uplink physical channel and/oruplink physical signal scheduled to be transmitted does not exceedmaximum uplink transmission power, the terminal device 2 can send theuplink physical channel and/or the uplink physical signal scheduled tobe transmitted, with the transmission power. Conversely, in a case inwhich the sum of the transmission power exceeds the maximum uplinktransmission power, the transmission power is scaled on the basis ofspecification decided in DC power control mode 1 or DC power controlmode 2 or the transmission of the predetermined uplink physical channeland/or uplink physical signal is stopped.

DC power control mode 1 is set in the terminal device 2 in a case inwhich the terminal device 2 supports the synchronous DC and DC powercontrol mode 1 is set from a higher layer. In DC power control mode 1, astate in which network is synchronized between a master base stationdevice and a secondary base station device is assumed. In a case inwhich a difference in a maximum uplink timing between serving cellsbelonging to different cell groups is equal to or less than apredetermined value, DC power control mode 1 is operated. That is, DCpower control mode 1 is operated on the assumption of a state in whichan uplink time unit boundary of the MCG and an uplink time unit boundaryof the SCG are matched.

In DC power control mode 1, the terminal device 2 performsprioritization on the basis of the type of uplink physical channel orcontent of information transmitted with the uplink physical channel anddistributes transmission power. Further, the terminal device 2distributes power with preference for the MCG when the priority is thesame between the CGs.

The priority of the power distribution and an example of the powerdistribution in DC power control mode i will be described. The terminaldevice 2 adjusts and allocates the transmission power in the order ofthe PRACH, the PUCCH or the PUSCH associated with the UCI including theHARQ-ACK and/or the SR, the PUCCH or the PUSCH associated with the UCIincluding neither the HARQ-ACK nor the SR, the PUSCH not associated withthe UCI, and the SRS. Moreover, in a case in which two CGs have the sameuplink physical channel, the transmission power is adjusted andallocated with preference for the MCG over the SCG. As a specificexample of an order of adjustment of the transmission power, in a casein which the MCG and the SCG have transmission of the PRACH, the PUCCHor the PUSCH with the UCI including the HARQ-ACK and/or the SR, thePUCCH or the PUSCH with the UCI including neither the HARQ-ACK nor theSR. The PUSCH with no UCI, and the SRS at the same transmission timing,the transmission power is adjusted in the priority of the PRACH of theMCG, the PRACH of the SCG, the PUCCH or the PUSCH with the UCI includingthe HARQ-ACK and/or the SR of the MCG, the PUCCH or the PUSCH with theUCI including the HARQ-ACK and/or the SR of the SCG, the PUCCH or thePUSCH with the UCI not including the HARQ-ACK and/or SR of the MCG, thePUCCH or the PUSCH with the UCI not including the HARQ-ACK and/or the SRof the SCG, the PUSCH with no UCI of the MCG, the PL SCH with no UCI ofthe SCG, the SRS of the MCG, aid the SRS of the SCG.

In the adjustment of the transmission power, the following (Expression11) is used.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 11} \right\rbrack & \; \\{{S\left( {i\; 1} \right)} = {{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} - {P_{u}\left( {i\; 1} \right)} - {P_{q}\left( {i\; 2} \right)} - {\min \begin{Bmatrix}{\max \begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} \cdot \frac{\gamma_{{CG}\; 2}}{100}} - {P_{q}\left( {i\; 2} \right)}}\end{Bmatrix}} \\{P_{q}^{\prime}\left( {i\; 2} \right)}\end{Bmatrix}}}} & \left( {{Expression}\mspace{14mu} 11} \right)\end{matrix}$

Specifically, the transmission power of each uplink physical channel andthe SRS is adjusted so that a situation not exceeding S(i1) shown in theforegoing (Expression 11) is satisfied. Here, S(i1) is an upper limit ofthe allocation (setting) of the transmission power which can beallocated to each uplink physical channel or uplink physical signal ofthe first CG in the uplink time unit i1. In the foregoing (Expression11), i1 is a sub frame number of CG1, i2 is an uplink time unit numberelf CG2, P_(CMAX)(i1, i2) is a maximum uplink transmission power duringa period in which the uplink time unit i1 and the uplink time unit i2.overlap, P_(u)(i1) is a sum of the transmission power of the uplinkphysical channels of CG1 which has already been allocated, P_(q)(i2) isa sum of the transmission power of the uplink physical channels and/orthe SRS of CG2 which has already been allocated, P′_(q)(i1) is a sum ofthe transmission power requested by the uplink physical channels and/orthe SRS of CG2 for which the transmission power has not yet beenallocated, and γ_(CG2) is a ratio of guaranteed power ensured at theminimum for the uplink transmission of CG2 instructed from a higherlayer. Here, CG1 is a CG which is a calculation target of the upperlimit of the transmission power. For example, in a case in which theupper limit of the transmission power of the uplink physical channels orthe uplink physical signals of the MCG is calculated, CG1 is assumed tobe the MCG and CG2 is assumed to be the SCG. Further, for example, in acase in which the upper limit of the transmission power of the uplinkphysical channels or the uplink physical signals of the SCG iscalculated, CG1 is assumed to be the SCG and CG2 is assumed to be theMCG.

DC power control mode 2 is set in the terminal device 2 in a case inwhich the terminal device 2 supports the asynchronous DC and DC powercontrol mode 1 is not set from a higher layer. DC power control mode 2can be operated even in a state in which a network is not synchronizedbetween a master base station device and a secondary base stationdevice. That is, DC power control mode 2 is operated on the assumptionof a state in which an uplink time unit boundary of the MCG and anuplink time unit boundary of the SCG are not matched.

In DC power control mode 2, the terminal device 2 distributes surpluspower to the uplink physical channels and/or the uplink physical signalsoccurring in the earlier uplink time unit while ensuring the guaranteedpower at the minimum for the other cell groups.

An example of power distribution in DC power control mode 2 will bedescribed. In a case in which the uplink time unit i 1 of CG1 overlapsan uplink time unit i2−1 and the uplink time unit i2 of CG2 on the timeaxis, the terminal device 2 decides transmission power to be allocatedto CG1 using P_(CG1)(i1) decided in the following (Expression 12) as anupper limit.

$\begin{matrix}\left\lbrack {{Math}.\mspace{14mu} 12} \right\rbrack & \; \\{{P_{{CG}\; 1}\left( {i\; 1} \right)} = {\min \begin{Bmatrix}{{P_{q}\left( {i\; 1} \right)},} \\{\begin{matrix}{{P_{CMAX}\left( {{i\; 1},{{i\; 2} - 1}} \right)} -} \\{{P_{{{PRACH}\_ {CG}}\; 1}\left( {i\; 1} \right)} -} \\\max\end{matrix}\begin{Bmatrix}{{P_{CMAX}\left( {{i\; 1},{{i\; 2} - 1}} \right)} \cdot} \\{\frac{\gamma_{{CG}\; 2}}{100},} \\{{P_{{CG}\; 2}\left( {{i\; 2} - 1} \right)} +} \\{{P_{{{PRACH}\_ {CG}}\; 2}\left( {{i\; 2} - 1} \right)},} \\{P_{{{PRACH}\_ {CG}}\; 2}\left( {i\; 2} \right)}\end{Bmatrix}}\end{Bmatrix}}} & \left( {{Expression}\mspace{14mu} 12} \right)\end{matrix}$

Specifically, in a case in which a sum of power requested by the PUCCH,the PUSCH, and/or the SRS generated in the uplink time unit i1 exceedsP_(CG1)(i1), the transmission power of each uplink physical channeland/or uplink physical signal is scaled so that a situation in which thesum of the power does not exceed P_(CG1)(i1) is satisfied. Here, P_(q)(i1) of (Expression 12) listed above is a sum of the transmission powerrequested by the uplink physical channel and/or the SRS of CG1,P_(CMAX)(i1, i2−1) is maximum uplink transmission power of a period inwhich the uplink time unit i1 and the uplink time unit i2−1 overlap,P_(PRACH) _(_) _(CG1)(i1) is transmission power of the PRACH of the subframe i1 of CG1, P_(PRACH) _(_) _(CG2)(i2−1) is transmission power ofthe PRACH of the uplink time unit i2−1 of CG2, P_(PRACH) _(_) _(CG2)(i2)is transmission power of the PRACH of the uplink time unit i2 of CG2,P_(CG2)(i2−1) is an upper limit of the transmission power of the PUCCH,the PUSCH, and/or the SRS generated in the uplink time unit i2−1 of CG2,and γ_(CG2) is a ratio of minimum guaranteed power for uplinktransmission of CG2 instructed from a higher layer.

Next, a method of scaling the transmission power of the uplink physicalchannels and/or the uplink physical signals in a case in which theuplink time units of two types of CGs set in the terminal device 2 aredifferent will be described.

In the synchronous DC, a plurality of CGs with different uplink timeunits can be set in the terminal device 2. FIG. 21 illustrates anexample in which CG1 and CG2 with different uplink time units areoperated by the synchronous DC. Since CG1 and CG2 are synchronized onthe time axis, a timing of a boundary of one uplink time unit of CG1 isaligned with a timing of a boundary of any uplink time unit of CG2.Further, the uplink time unit of CG1 is an integer multiple of theuplink time unit of CG2. In this example, the uplink time unit of CG1 istwice the uplink unit time of CG2. When an i1-th uplink time unit of CG1is defined as an uplink time unit i1, an i2-th uplink time unit of CG2can be defined as an uplink time unit i2 and a subsequent uplink timeunit of CG2 can be defined as an uplink time unit i2+1.

Examples of calculation expressions of S(i1), S(i2), and S(i2+1) in aease in which uplink transmission simultaneously occurs in the uplinktime unit i1 of CG1 and the uplink time unit i2 and the uplink time uniti2+1 of CG2 in a section of the uplink time unit it is expressed belowin (Expression 13), (Expression 14), and

(Expression 15).

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 13} \right\rbrack \mspace{490mu}} & \; \\{{S\left( {i\; 1} \right)} = {{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} - {P_{u}\left( {i\; 1} \right)} - {P_{q}\left( {i\; 2} \right)} - {\min \left\{ {\max \begin{matrix}\begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} \cdot \frac{\gamma_{{CG}\; 2}}{100}} - {P_{q}\left( {i\; 2} \right)}}\end{Bmatrix} \\{P_{q}^{\prime}\left( {i\; 2} \right)}\end{matrix}} \right\}}}} & \left( {{Expression}\mspace{14mu} 13} \right) \\{{S\left( {i\; 2} \right)} = {{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} - {P_{u}\left( {i\; 2} \right)} - {P_{q}\left( {i\; 1} \right)} - {\min \left\{ {\max \begin{matrix}\begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} \cdot \frac{\gamma_{{CG}\; 1}}{100}} - {P_{q}\left( {i\; 1} \right)}}\end{Bmatrix} \\{P_{q}^{\prime}\left( {i\; 1} \right)}\end{matrix}} \right\}}}} & \left( {{Expression}\mspace{14mu} 14} \right) \\{\; {{S\left( {{i\; 2} + 1} \right)} = {{P_{CMAX}\left( {{i\; 1},{{i\; 2} + 1}} \right)} - {P_{u}\left( {{i\; 2} + 1} \right)} - {P_{q}\left( {i\; 1} \right)}}}} & \left( {{Expression}\mspace{14mu} 15} \right)\end{matrix}$

The foregoing (Expression 13) is an example of a calculation expressionof the upper limit S(i1) of the allocation (setting) of the transmissionpower of the PUCCH, the PUSCH, or the SRS of CG1 in the uplink time uniti1. Further, the foregoing (Expression 14) is an example of acalculation expression of the upper limit S(i2) of the allocation(setting) of the transmission power of the PUCCH, the PUCCH, or the SRSof CG2 in the uplink time unit i2. Further, the foregoing (Expression15) is an example of a calculation expression of the upper limit S(i2+1)of the allocation (setting) of the transmission power of the PUCCH, thePUSCH, or the SRS of CG2 in the uplink time unit i2+1. In this example,that is, the transmission power is allocated (set) earlier in accordancewith DC power control mode 1 in a case in which the uplink time units ofthe two CGs are the same in the power distribution of the uplinktransmission occurring in the uplink time unit i1 and the uplinktransmission occurring in the uplink time unit i2. Then, after theallocation (setting) of the uplink transmission power occurring in theuplink time unit i1 and the uplink time unit i2 is all confirmed, theuplink transmission power occurring in the uplink time unit i2+1 iscalculated. The uplink transmission power occurring in the uplink timeunit i2+1 is distributed from surplus power obtained by subtracting thetransmission power P_(q)(i1) which has already been allocated to CG1 inthe uplink time unit i1 from the maximum uplink transmission powerP_(CMAX) 9i1, i2+1) of the terminal device 2 in the section in which theuplink time unit i1 and the uplink time unit i2+1 overlap.

In addition, other examples of calculation expressions of S(i1), S(i2),and S(i2+1) in a case in which uplink transmission simultaneously occursin the uplink time unit i1 of CG1 and the uplink time unit i2 and theuplink time unit i2+1 of CG2 in a section of the uplink time unit i1 isexpressed below in (Expression 16), (Expression 17), and (Expression18).

$\begin{matrix}{\left\lbrack {{Math}.\mspace{14mu} 14} \right\rbrack \mspace{655mu}} & \; \\{\mspace{605mu} \left( {{Expression}\mspace{14mu} 16} \right)} & \; \\{{S\left( {i\; 1} \right)} = {{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} - {P_{u}\left( {i\; 1} \right)} - {\max \left( {{P_{q}\left( {i\; 2} \right)},{P_{q}\left( {{i\; 2} + 0.5} \right)}} \right)} - {\quad{\min  \left\{ {\max  \begin{matrix}\begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} \cdot \frac{\gamma_{{CG}\; 2}}{100}} - {\max \left( {{P_{q}\left( {i\; 2} \right)},{P_{q}\left( {{i\; 2} + 0.5} \right)}} \right)}}\end{Bmatrix} \\{\max \left( {{P_{q}^{\prime}\left( {i\; 2} \right)},{P_{q}^{\prime}\left( {{i\; 2} + 0.5} \right)}} \right)}\end{matrix}} \right\}}}}} & \; \\{\mspace{596mu} {\left( {{Expression}\mspace{14mu} 17} \right){{S\left( {i\; 2} \right)} = {{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} - {P_{u}\left( {i\; 2} \right)} - {P_{q}\left( {i\; 1} \right)} - {\min \left\{ {\max \begin{matrix}\begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{i\; 2}} \right)} \cdot \frac{\gamma_{{CG}\; 1}}{100}} - {P_{q}\left( {i\; 1} \right)}}\end{Bmatrix} \\{P_{q}^{\prime}\left( {i\; 1} \right)}\end{matrix}} \right\}}}}}} & \; \\{\mspace{599mu} \left( {{Expression}\mspace{14mu} 18} \right)} & \; \\{{S\left( {{i\; 2} + 1} \right)} = {{P_{CMAX}\left( {{i\; 1},{{i\; 2} + 1}} \right)} - {P_{u}\left( {{i\; 2} + 1} \right)} - {P_{q}\left( {i\; 1} \right)} - {\min \left\{ {\max \begin{matrix}\begin{Bmatrix}{0,} \\{{{P_{CMAX}\left( {{i\; 1},{{i\; 2} + 1}} \right)} \cdot \frac{\gamma_{{CG}\; 1}}{100}} - {P_{q}\left( {i\; 1} \right)}}\end{Bmatrix} \\{P_{q}^{\prime}\left( {i\; 1} \right)}\end{matrix}} \right\}}}} & \;\end{matrix}$

The foregoing (Expression 16) is an example of a calculation expressionof the upper limit S(i1) of the allocation (setting) of the transmissionpower of the PUCCH, the PUSCH, or the SRS of CG1 in the uplink time uniti1. Further, the foregoing (Expression 17) is an example of acalculation expression of the upper limit S(i2) of the allocation(setting) of the transmission power of the PUCCH, the PUSCH, or the SRSof CG2 in the uplink time unit i2. Further, the foregoing (Expression18) is an example of a calculation expression of the upper limit S(i2+1)of the allocation (setting) of the transmission power of the PUCCH, thePUSCH, or the SRS of CG2 in the uplink time unit i2+1. In this example,the transmission power of the uplink transmission in the uplink timeunit i1, the uplink transmission in the uplink time unit i2, and theuplink transmission in the uplink time unit i2+1 is simultaneouslyallocated (set). Specifically, the upper limit S(i1) of the allocation(setting) of the transmission power of the PUCCH, the PUSCH, or the SRSof CG1 in the uplink time unit i1 is calculated in consideration of theuplink transmission in the uplink time unit i2 and the uplink time uniti2+1. The upper limit S(i2) of the allocation (setting) of thetransmission power of the PUCCH, the PUSCH, or the SRS of CG2 in theuplink time unit i2 is calculated in consideration of the uplinktransmission in the uplink time unit i1. The upper limit S(i2+1) of theallocation (setting) of the transmission power of the PUCCH, the PUSCH,or the SRS of CG2 in the uplink time unit i2+1 is calculated inconsideration of the uplink transmission in the uplink time unit i1.

Even in asynchronous DC, a plurality of CGs with different uplink timeunits can be set in the terminal device 2. FIG. 22 illustrates anexample in which CG1 and CG2 with different uplink time units areoperated by the asynchronous DC. Since CG1 and CG2 are not synchronizedon the time axis, a timing of a boundary of one uplink time unit of CG1is not aligned with a timing of a boundary of any uplink time unit ofCG2.

Even in this case, DC power control mode 2 in a case in which theuplink.

time units of two CGs set in the terminal device 2 are the same can besimilarly applied. That is, the terminal device 2 distributes surpluspower to the uplink physical channels and/or the uplink physical signalsoccurring in the earlier uplink time unit while ensuring the guaranteedpower at the minimum for the other cell groups. For example, in a casein which the head of the uplink time unit i1 of CG overlaps the uplinktransmission of CG2, the terminal device 2 decides the uplinktransmission power to be allocated to CG1 using P_(CG1)(i1) decided inthe above-described (Expression 12) as an upper limit.

Note that all the foregoing examples can be applied to any case of acombination of only LTE cells, a combination of an LTE cell and an NRcell, and a combination of only NR cells.

Note that the present embodiment can also be applied to the sidelinktransmission. For example, in the foregoing examples, a time unitserving as a standard on the time axis of the calculation and theallocation (setting) of the sidelink transmission power may be definedas an uplink time unit. In this case, the foregoing examples can beapplied by substituting the uplink transmission, the uplink physicalchannels, and the uplink physical signals with sidelink transmission andsidelink physical channels, and sidelink physical signals.

2. APPLICATION EXAMPLES

The technology according to the present disclosure can be applied tovarious products. For example, the base station device 1 may be realizedas any type of evolved Node B (eNB) such as a macro eNB or a small eNB.The small eNB may be an eNB that covers a cell, such as a pico eNB, amicro eNB, or a home (femto) eNB, smaller than a macro cell. Instead,the base station device 1 may be realized as another type of basestation such as a NodeB or a base transceiver station (BTS). The basestation device 1 may include a main entity (also referred to as a basestation device) that controls wireless communication and one or moreremote radio heads (RRHs) disposed at different locations from the mainentity. Further, various types of terminals to be described below mayoperate as the base station device 1 by performing a base stationfunction temporarily or permanently. Moreover, at least some of theconstituent elements of the base station device 1 may be realized in abase station device or a module for the base station device.

Further, for example, the terminal device 2 may be realized as a mobileterminal such as a smartphone, a tablet personal computer (PC), anotebook PC, a portable game terminal, a portable/dangle mobile routeror a digital camera, or an in-vehicle terminal such as a car navigationdevice. Further, the terminal device 2 may be realized as a terminalthat performs machine to machine (M2M) communication (also referred toas a machine type communication (MTC) terminal). Moreover, at least someof the constituent elements of the terminal device 2 may be realized ina module mounted on the terminal (for example, an integrated circuitmodule configured on one die).

2.1. Application Examples for Base Station First Application Example

FIG. 23 is a block diagram illustrating a first example of a schematicconfiguration of an eNB to which the technology according to the presentdisclosure may be applied. An eNB 800 includes one or more antennas 810and a base station apparatus 820. Each antenna 810 and the base stationapparatus 820 may be connected to each other via an RF cable.

Each of the antennas 810 includes a single or a plurality of antennaelements (e.g., a plurality of antenna elements constituting a MIMOantenna) and is used for the base station apparatus 820 to transmit andreceive a wireless signal. The eNB 800 may include the plurality of theantennas 810 as illustrated in FIG. 23, and the plurality of antennas810 may, for example, correspond to a plurality of frequency bands usedby the eNB 800. It should be noted that while FIG. 23 illustrates anexample in which the eNB 800 includes the plurality of antennas 810, theeNB 800 may include the single antenna 810.

The base station apparatus 820 includes a controller 821, a memory 822,a network interface 823, and a wireless communication interface 825.

The controller 821 may be, for example, a CPU or a DSP, and operatesvarious functions of an upper layer of the base station apparatus 820.For example, the controller 821 generates a data packet from data in asignal processed by the wireless communication interface 825, andtransfers the generated packet via the network interface 823. Thecontroller 821 may generate a bundled packet by bundling data from aplurality of base band processors to transfer the generated bundledpacket. Further, the controller 821 may also have a logical function ofperforming control such as radio resource control, radio bearer control,mobility management, admission control, and scheduling. Further, thecontrol may be performed in cooperation with a surrounding eNB or a corenetwork node. The memory 822 includes a RAM and a ROM, and stores aprogram executed by the controller 821 and a variety of control data(such as, for example, terminal list, transmission power data, andscheduling data

The network interface 823 is a communication interface for connectingthe base station apparatus 820 to the core network 824. The controller821 may communicate with a core network node or another eNB via thenetwork interface 823. In this case, the eNB 800 may be connected to acore network node or another eNB through a logical interface (e.g., S1interface or X2 interface). The network interface 823 may be a wiredcommunication interface or a wireless communication interface forwireless backhaul. In the case where the network interface 823 is awireless communication interface, the network interface 823 may use ahigher frequency band for wireless communication than a frequency handused by the wireless communication interface 825.

The wireless communication interface 825 supports a cellularcommunication system such as long term evolution (LTE) or LTE-Advanced,and provides wireless connection to a terminal located within the cellof the eNB 800 via the antenna 810. The wireless communication interface825 may typically include a base band (BB) processor 826, an RF circuit827, and the like. The BB processor 826 may, for example, performencoding/decoding, modulation/demodulation, multiplexing/demultiplexing,and the like, and performs a variety of signal processing on each layer(e.g., L1, medium access control (MAC), radio link control (RLC), andpacket data convergence protocol (PDCP)). The BB processor 826 may havepart or all of the logical functions as described above instead of thecontroller 821. The BB processor 826 may be a module including a memoryhaving a communication control program stored therein, a processor toexecute the program, and a related circuit, and the function of the BBprocessor 826 may be changeable by updating the program. Further, themodule may be a card or blade to be inserted into a slot of the basestation apparatus 820, or a chip mounted on the card or the blade.Meanwhile, the RF circuit 827 may include a mixer, a filter, anamplifier, and the like, and transmits and receives a wireless signalvia the antenna 810.

The wireless communication interface 825 may include a plurality of theBB processors 826 as illustrated in FIG. 23, and the plurality of BBprocessors 826 may, for example, correspond to a plurality of frequencybands used by the eNB 800. Further, the wireless communication interface825 may also include a plurality of the RF circuits 827, as illustratedin FIG. 23, and the plurality of RF circuits 827 may, for example,correspond to a plurality of antenna elements. Note that FIG. 23illustrates an example in which the wireless communication interface 825includes the plurality of BB processors 826 and the plurality of RFcircuits 827, but the wireless communication interface 825 may includethe single BB processor 826 or the single RF circuit 827.

In the eNB 800 illustrated in FIG. 23, one or more constituent elementsof the higher layer processing unit 101 and the control unit 103described with reference to FIG. 8 may be implemented in the wirelesscommunication interface 825. Alternatively, at least some of theconstituent elements may be implemented in the controller 821. As oneexample, a module including a part or the whole of (for example, the BBprocessor 826) of the wireless communication interface 825 and/or thecontroller 821 may be implemented on the eNB 800. The one or moreconstituent elements in the module may be implemented in the module. Inthis case, the module may store a program causing a processor tofunction as the one more constituent elements (in other words, a programcausing the processor to execute operations of the one or moreconstituent elements) and execute the program. As another example, aprogram causing the processor to function as the one or more constituentelements may be installed in the eNB 800, and the wireless communicationinterface 825 for example, the BB processor 826) and/or the controller821 may execute the program. In this way, the eNB 800, the base stationdevice 820, or the module may be provided as a device including the oneor more constituent elements and a program causing the processor tofunction as the one or more constituent elements may be provided. Inaddition, a readable recording medium on which the program is recordedmay be provided.

Further, in the eNB 800 illustrated in FIG. 23, the receiving unit 105and the transmitting unit 107 described with reference to FIG. 8 may beimplemented in the wireless communication interface 825 (for example,the RF circuit 827). Further, the transceiving antenna 109 may beimplemented in the antenna 810. Further, the network communication unit130 may be implemented in the controller 821 and/or the networkinterface 823.

Second Application Example

FIG. 24 is a block diagram illustrating a second example of a schematicconfiguration of an eNB to which the technology according to the presentdisclosure may be applied. An eNB 830 includes one or more antennas 840,a base station apparatus 850, and an RRH 860. Each of the antennas 840and the RRH 860 may be connected to each other via an RF cable. Further,the base station apparatus 850 and the RRH 860 may be connected to eachother by a high speed line such as optical fiber cables.

Each of the antennas 840 includes a single or a plurality of antennaelements (e.g., antenna elements constituting a MIMO antenna), and isused for the RRH 860 to transmit and receive a wireless signal. The eNB830 may include a plurality of the antennas 840 as illustrated in FIG.24, and the plurality of antennas 840 may, for example, correspond to aplurality of frequency bands used by the eNB 830. Note that FIG. 24illustrates an example in which the eNB 830 includes the plurality ofantennas 840, but the eNB 830 may include the single antenna 840.

The base station apparatus 850 includes a controller 851, a memory 852,a network interface 853, a wireless communication interface 855, and aconnection interface 857. The controller 851, the memory 852, and thenetwork interface 853 are similar to the controller 821, the memory 822,and the network interface 823 described with reference to FIG. 23.

The wireless communication interface 855 supports a cellularcommunication system such as LTE and LTE-Advanced, and provides wirelessconnection to a terminal located in a sector corresponding to the RRH860 via the RRH 860 and the antenna 840. The wireless communicationinterface 855 may typically include a BB processor 856 or the like. TheBB processor 856 is similar to the BB processor 826 described withreference to FIG. 23 except that the BB processor 856 is connected to anRF circuit 864 of the RRH 860 via the connection interface 857. Thewireless communication interface 855 may include a plurality of the BBprocessors 856. As illustrated in FIG. 23, and the plurality of BBprocessors 856 may, for example, correspond to a plurality of frequencybands used by the eNB 830. Note that FIG. 24 illustrates an example inwhich the wireless communication interface 855 includes the plurality ofBB processors 856, but the wireless communication interface 855 mayinclude the single BB processor 856.

The connection interface 857 is an interface for connecting the basestation apparatus 850 (wireless communication interface 855) to the RRH860. The connection interface 857 may be a communication module forcommunication on the high speed line which connects the base stationapparatus 850 (wireless communication interface 855) to the RRH 860.

Further, the RRH 860 includes a connection interface 861 and a wirelesscommunication interface 863.

The connection interface 861 is an interface for connecting the RRH 860(wireless communication interface 863) to the base station apparatus850. The connection interface 861 may be a communication module forcommunication on the high speed line.

The wireless communication interface 863 transmits and receives awireless signal via the antenna 840. The wireless communicationinterface 863 may typically include the RF circuit 864 or the like. TheRF circuit 864 may include a mixer, a filter; an amplifier and the like,and transmits and receives wireless signal via the antenna 840. Thewireless communication interface 863 may include a plurality of the RFcircuits 864 as illustrated in FIG. 24, and the plurality of RF circuits864 may, for example, correspond to a plurality of antenna elements.Note that FIG. 24 illustrates an example in which the wirelesscommunication interface 863 includes the plurality of RF circuits 864,but the wireless communication interface 863 may include the single RFcircuit 864.

In the eNB 830 illustrated in FIG. 24, one or more constituent elementsof the higher layer processing unit 101 and the control unit 103described with reference to FIG. 8 may be implemented in the wirelesscommunication interface 855 and/or the wireless communication interface863. Alternatively, at least some of the constituent elements may beimplemented in the controller 851. As one example, a module including apart or the whole of (for example, the BB processor 856) of the wirelesscommunication interface 855 and/or the controller 851 may be implementedon the eNB 830. The one or more constituent elements may be implementedin the module. In this case, the module may store a program causing aprocessor to function as the one more constituent elements (in otherwords, a program causing the processor to execute operations of the oneor more constituent elements) and execute the program. As anotherexample, a program causing the processor to function as the one or moreconstituent elements may be installed in the eNB 830, and the wirelesscommunication interface 855 (for example, the BB processor 856) and/orthe controller 851 may execute the program. In this way, the eNB 830,the base station device 850, or the module may be provided as a deviceincluding the one or more constituent elements and a program causing theprocessor to function as the one or more constituent elements may beprovided. In addition, a readable recording medium on which the programis recorded may be provided.

Further, in the eNB 830 illustrated in FIG. 24, for example, thereceiving unit 105 and the transmitting unit 107 described withreference to FIG. 8 may be implemented in the wireless communicationinterface 863 (for example, the RF circuit 864). Further, thetransceiving antenna 109 may be implemented in the antenna 840. Further,the network communication unit 130 may be implemented in the controller851 and/or the network interface 853.

2.2. Application Examples for Terminal Apparatus First ApplicationExample

FIG. 25 is a block diagram illustrating an example of a schematicconfiguration of a smartphone 900 to which the technology according tothe present disclosure may be applied. The smartphone 900 includes aprocessor 901, a memory 902, a storage 903, an external connectioninterface 904, a camera 906, a sensor 907, a microphone 908, an inputdevice 909, a display device 910, a speaker 911, a wirelesscommunication interface 912, one or more antenna switches 915 one ormore antennas 916, a bus 917, a battery 918, and an auxiliary controller919.

The processor 901 may be, for example, a CPU or a system on chip (SoC),and controls the functions of an application layer and other layers ofthe smartphone 900. The memory 902 includes a RAM and a ROM, and storesa program executed by the processor 901 and data. The storage 903 mayinclude a storage medium such as semiconductor memories and hard disks.The external connection interface 904 is an interface for connecting thesmartphone 900 to an externally attached device such as memory cards anduniversal serial bus (USB) devices.

The camera 906 includes, for example, an image sensor such as chargecoupled devices (CCDs) and complementary metal oxide semiconductor(CMOS), and generates a captured image. The sensor 907 may include asensor group including, for example, a positioning sensor, a gyrosensor, a geomagnetic sensor, an acceleration sensor and the like. Themicrophone 908 converts a sound that is input into the smartphone 900 toan audio signal. The input device 909 includes, for example, a touchsensor which detects that a screen of the display device 910 is touched,a key pad, a keyboard, a button, a switch or the like, and accepts anoperation or an information input from a user. The display device 910includes a screen such as liquid crystal displays (LCDs) and organiclight emitting diode (OLED) displays, and displays an output image ofthe smartphone 900. The speaker 911 converts the audio signal that isoutput from the smartphone 900 to a sound.

The wireless communication interface 912 supports a cellularcommunication system such as LTE or LTE-Advanced, and performs wirelesscommunication. The wireless communication interface 912 may typicallyinclude the BB processor 913, the RF circuit 914, and the like. The BBprocessor 913 may, for example, perform encoding/decoding,modulation/demodulation, multiplexing/demultiplexing, and the like, andperforms a variety of types of signal processing for wirelesscommunication. On the other hand, the RF circuit 914 may include amixer, a filter, an amplifier, and the like, and transmits and receivesa wireless signal via the antenna 916. The wireless communicationinterface 912 may he a one-chip module in which the BB processor 913 andthe RF circuit 914 are integrated. The wireless communication interface912 may include a plurality of BB processors 913 and a plurality of RFcircuits 914 as illustrated in FIG. 25. Note that FIG. 25 illustrates anexample in which the wireless communication interface 912 includes aplurality of BB processors 913 and a plurality of RF circuits 914, butthe wireless communication interface 912 may include a single BBprocessor 913 or a single RF circuit 914.

Further, the wireless communication interface 912 may support othertypes of wireless communication system such as a short range wirelesscommunication system, a near field communication system, and a wirelesslocal are a network (LAN) system in addition to the cellularcommunication system, and in this case, the wireless communicationinterface 912 may include the BB processor 913 and the RF circuit 914for each wireless communication system.

Each antenna switch 915 switches a connection destination of the antenna916 among a plurality of circuits (for example, circuits for differentwireless communication systems) included in the wireless communicationinterface 912.

Each of the antennas 916 includes one or more antenna elements (forexample, a plurality of antenna elements constituting a MIMO antenna)and is used for transmission and reception of the wireless signal by thewireless communication interface 912. The smartphone 900 may include aplurality of antennas 916 as illustrated in FIG. 25. Note that FIG. 25illustrates an example in which the smartphone 900 includes a pluralityof antennas 916, but the smartphone 900 may include a single antenna916.

Further, the smartphone 900 may include the antenna 916 for eachwireless communication system. In this case, the antenna switch 915 maybe omitted from a configuration of the smartphone 900.

The bus 917 connects the processor 901, the memory 902, the storage 903,the external connection interface 904, the camera 906, the sensor 907,the microphone 908, the input device 909, the display device 910, thespeaker 911, the wireless communication interface 912, and the auxiliarycontroller 919 to each other. The battery 918 supplies electric power toeach block of the smartphone 900 illustrated in FIG. 25 via a feederline that is partially illustrated in the figure as a dashed line. Theauxiliary controller 919, for example, operates a minimally necessaryfunction of the smartphone 900 in a sleep mode.

In the smartphone 900 illustrated in FIG. 25, one or more constituentelements of the higher layer processing unit 201 and the control unit203 described with reference to FIG. 9 may be implemented in thewireless communication interface 912. Alternatively, at least some ofthe constituent elements may be implemented in the processor 901 or theauxiliary controller 919. As one example, a module including a part orthe whole of (for example, the BB processor 913) of the wirelesscommunication interface 912, the processor 901, and/or the auxiliarycontroller 919 may be implemented on the smartphone 900. The one or moreconstituent elements may be implemented in the module. In this case, themodule may store a program causing a processor to function as the onemore constituent elements (in other words, a program causing theprocessor to execute operations of the one or more constituent elements)and execute the program. As another example, a program causing theprocessor to function as the one or more constituent elements may beinstalled in the smartphone 900, and the wireless communicationinterface 912 (for example, the BB processor 913), the processor 901,and/or the auxiliary controller 919 may execute the program. In thisway, the smartphone 900 or the module may be provided as a deviceincluding the one or more constituent elements and a program causing theprocessor to function as the one or more constituent elements may beprovided. In addition, a readable recording medium on which the programis recorded may be provided.

Further, in the smartphone 900 illustrated in FIG. 25, for example, thereceiving unit 205 and the transmitting unit 207 described withreference to FIG. 9 may be implemented in the wireless communicationinterface 912 (for example, the RF circuit 914). Further, thetransceiving antenna 209 may be implemented in the antenna 916.

Second Application Example

FIG. 26 is a block diagram illustrating an example of a schematicconfiguration of a car navigation apparatus 920 to which the technologyaccording to the present disclosure may be applied. The car navigationapparatus 920 includes a processor 921, a memory 922, a globalpositioning system (GPS) module 924, a sensor 925, a data interface 926,a content player 927, a storage medium interface 928, an input device929, a display device 930, a speaker 931, a wireless communicationinterface 933, one or more antenna switches 936, one or more antennas937, and a battery 938.

The processor 921 may be, for example, a CPU or an SoC, and controls thenavigation function and the other functions of the car navigationapparatus 920. The memory 922 includes a RAM and a ROM, and stores aprogram executed by the processor 921 and data.

The GPS module 924 uses a GPS signal received from a GPS satellite tomeasure the position (e.g., latitude, longitude, and altitude) of thecar navigation apparatus 920. The sensor 925 may include a sensor groupincluding, for example, a gyro sensor, a geomagnetic sensor, abarometric sensor and the like. The data interface 926 is, for example,connected to an in-vehicle network 941 via a terminal that is notillustrated, and acquires data such as vehicle speed data generated onthe vehicle side.

The content player 927 reproduces content stored in a storage medium(e.g., CD or DVD) inserted into the storage medium interface 928. Theinput device 929 includes, for example, a touch sensor which detectsthat a screen of the display device 930 is touched, a button, a switchor the like, and accepts operation or information input from a user. Thedisplay device 930 includes a screen such as LCDs and OLED displays, anddisplays an image of the navigation function or the reproduced content.The speaker 931 outputs a sound of the navigation function or thereproduced content.

The wireless communication interface 933 supports a cellularcommunication system such as LTE or LTE-Advanced, and performs wirelesscommunication. The wireless communication interface 933 may typicallyinclude the BB processor 934, the RF circuit 935, and the like. The BBprocessor 934 may, for example, perform encoding /decoding,modulation/demodulation, multiplexing/demultiplexing, and the like, andperforms a variety of types of signal processing for wirelesscommunication. On the other hand, the RF circuit 935 may include amixer, a filter, an amplifier, and the like, and transmits and receivesa wireless signal via the antenna 937. The wireless communicationinterface 933 may he a one-chip module in which the BB processor 934 andthe RE circuit 935 are integrated. The wireless communication interface933 may include a plurality of BB processors 934 and a plurality of RFcircuits 935 as illustrated in FIG. 26. Note that FIG. 26 illustrates anexample in which the wireless communication interface 933 includes aplurality of BB processors 934 and a plurality of RF circuits 935, butthe wireless communication interface 933 may include a single BBprocessor 934 or a single RF circuit 935.

Further, the wireless communication interface 933 may support othertypes of wireless communication system such as a short range wirelesscommunication system, a near field communication system, and a wirelessLAN system in addition to the cellular communication system, and in thiscase, the wireless communication interface 933 may include the BBprocessor 934 and the RF circuit 935 for each wireless communicationsystem.

Each antenna switch 936 switches a connection destination of the antenna937 among a plurality of circuits (for example, circuits for differentwireless communication systems) included in the wireless communicationinterface 933.

Each of the antennas 937 includes one or more antenna elements (forexample, a plurality of antenna elements constituting a MIMO antenna)and is used for transmission and reception of the wireless signal by thewireless communication interface 933. The car navigation apparatus 920may include a plurality of antennas 937 as illustrated in FIG. 26. Notethat FIG. 26 illustrates an example in which the car navigationapparatus 920 includes a plurality of antennas 937, but the carnavigation apparatus 920 may include a single antenna 937.

Further, the car navigation apparatus 920 may include the antenna 937for each wireless communication system. In this case, the antenna switch936 may be omitted from a configuration of the car navigation apparatus920.

The battery 938 supplies electric power to each block of the carnavigation apparatus 920 illustrated in FIG. 26 via a feeder line thatis partially illustrated in the figure as a dashed line. Further, thebattery 938 accumulates the electric power supplied from the vehicle.

In the car navigation 920 illustrated in FIG. 26, one or moreconstituent elements of the higher layer processing unit 201 and thecontrol unit 203 described with reference to FIG. 9 may be implementedin the wireless communication interface 933. Alternatively, at leastsome of the constituent elements may be implemented in the processor921. As one example, a module including a part or the whole of (forexample, the BB processor 934) of the wireless communication interface933 and/or the processor 921 may be implemented on the car navigation920. The one or more constituent elements may be implemented in themodule. In this case, the module may store a program causing a processorto function as the one more constituent elements (in other words, aprogram causing the processor to execute operations of the one or moreconstituent elements) and execute the program. As another example, aprogram causing the processor to function as the one or more constituentelements may be installed in the car navigation 920, and the wirelesscommunication interface 933 (for example, the BB processor 934) and/orthe processor 921 may execute the program. In this way, the carnavigation 920 or the module may be provided as a device including theone or more constituent elements and a program causing the processor tofunction as the one or more constituent elements may be provided. Inaddition, a readable recording medium on which the program is recordedmay be provided.

Further, in the car navigation 920 illustrated in FIG. 26, for example,the receiving unit 205 and the transmitting unit 207 described withreference to FIG. 9 may be implemented in the wireless communicationinterface 933 (for example, the RF circuit 935). Further, thetransceiving antenna 209 may be implemented in the antenna 937.

The technology of the present disclosure may also be realized as anin-vehicle system (or a vehicle) 940 including one or more blocks of thecar navigation apparatus 920, the in-vehicle network 941, and a vehiclemodule 942. That is, the in-vehicle system (or a vehicle) 940 may beprovided as a device that includes at least one of the higher layerprocessing unit 201, the control unit 203, the receiving unit 205, andthe transmitting unit 207. The vehicle module 942 generates vehicle datasuch as vehicle speed, engine speed, and trouble information, andoutputs the generated data to the in-vehicle network 941.

3. CONCLUSION

As described above, in the wireless communication system according tothe embodiment, the terminal device allocates power for communicationbetween the first serving cell and the second serving cell withdifferent sub frame lengths. Further, at this time, the terminal devicecalculates the transmission power of the first uplink physical channelgenerated in the first serving cell in a first time unit, and calculatesthe transmission power of the second uplink physical channel generatedin the second serving cell in a second time unit. In this configuration,the terminal device can multiplex a plurality of wireless accesstechnologies designed flexibly in accordance with diverse use cases.Furthermore, it is possible to further improve transmission efficiencyof the system.

The preferred embodiment(s) of the present disclosure has/have beendescribed above with reference to the accompanying drawings, whilst thepresent disclosure is not limited to the above examples. A personskilled in the art may find various alterations and modifications withinthe scope of the appended claims, and it should be understood that theywill naturally conic under. The technical scope of the presentdisclosure.

Further, the effects described in this specification are merelyillustrative or exemplified effects, and are not limitative. That is,with or in the place of the above effects, the technology according tothe present disclosure may achieve other effects that are clear to thoseskilled in the art from the description of this specification.

Additionally, the present technology may also be configured as below.

-   (1)

A terminal device including:

a communication unit configured to perform wireless communication; and

a control unit configured to allocate power for communication between afirst serving cell and a second serving cell with different sub framelengths,

in which the control unit

-   -   calculates transmission power of a first uplink physical channel        occurring in the first serving cell in a first time unit, and    -   calculates transmission power of a second uplink physical        channel occurring in the second serving cell in a second time        unit.

-   (2)

The terminal device according to (1), in which the first time unit andthe second time unit are set to be substantially equal values.

-   (3)

The terminal device according to (2), in which the first time unit andthe second time unit are set to be substantially equal to a sub framelength of Long Term Evolution (LTE).

-   (4)

The terminal device according to (2), in which the first time unit andthe second time unit are set to be substantially equal to a maximumvalue between a sub frame length in the first serving cell and a subframe length in the second serving cell.

-   (5)

The terminal device according to (1), in which the first time unit andthe second time unit are set to be mutually different values.

-   (6)

The terminal device according to (5),

in which the first time unit is set to be substantially equal to a subframe length in the first serving cell, and

the second time unit is set to be substantially equal to a sub framelength in the second serving cell.

-   (7)

The terminal device according to (5),

in which the first time unit is set to be substantially equal to aperiod at which the first uplink physical channel occurs, and

the second time unit is set to be substantially equal to a period atwhich the second uplink physical channel occurs.

-   (8)

The terminal device according to (5), in which the second time unit isan integer multiple of the first time unit.

-   (9)

The terminal device according to (8),

in which the first serving cell and the second serving cell belong to asame cell group,

the first uplink physical channel overlaps the second uplink physicalchannel on a time axis, and

in a case in which a third uplink physical channel which furtheroverlaps the first uplink physical channel on the time axis and occursin the second serving cell occurs after the second uplink physicalchannel, a first scaling factor by which the first uplink physicalchannel and the second uplink physical channel are multiplied and asecond scaling factor by which the third uplink physical channel ismultiplied are individually decided.

-   (10)

The terminal device according to (9), in which the first scaling factoris decided within a range in which a value obtained by multiplying a sumof transmission power between the first uplink physical channel and thesecond uplink physical channel by the first scaling factor does notexceed maximum uplink transmission power.

-   (11)

The terminal device according to (9), in which the second sealing factoris decided within a range in which a value obtained by multiplyingtransmission power of the third uplink physical channel by the secondscaling factor does not exceed a value obtained by subtracting a valueobtained by multiplying the transmission power of the first uplinkphysical channel by the first scaling factor from maximum uplinktransmission power.

-   (12)

The terminal device according to (5),

in which the first serving cell and the second serving cell belong to asame cell group,

the first uplink physical channel overlaps the second uplink physicalchannel on a time axis, and

in a case in which a third uplink physical channel which overlaps thefirst uplink physical channel on the time axis and occurs in the secondserving cell occurs after the second uplink physical channel, each ofthe first uplink physical channel, the second uplink physical channel,and the third uplink physical channel is multiplied by a common scalingfactor.

-   (13)

The terminal device according to (12).

in which the scaling factor is decided within a range in which a valueobtained by multiplying a sum of the transmission power of the firstuplink physical channel and a maximum value between the transmissionpower of the second uplink physical channel and transmission power ofthe third uplink physical channel by the scaling factor does not exceedmaximum uplink transmission power.

-   (14)

The terminal device according to (12),

in which the scaling factor is decided within a range in which a valueobtained by multiplying a maximum value between a sum of thetransmission power of the first uplink physical channel and thetransmission power of the second uplink physical channel and a sum ofthe transmission power of the first uplink physical channel andtransmission power of the third uplink physical channel by the scalingfactor does not exceed maximum uplink transmission power.

-   (15)

A base station device including:

a communication unit configured to perform wireless communication; and

a control unit configured to set a first serving cell and a secondserving cell with different sub frame lengths,

in which the control unit

-   -   sets a first unit time for calculating transmission power of a        test uplink physical channel occurring in the first serving        cell, and    -   sets a second unit time for calculating transmission power of a        second uplink physical channel occurring in the second serving        cell.

-   (16)

A communication method including:

performing wireless communication;

allocating, by a processor, power for communication between a firstserving cell and a second serving cell with different sub frame lengths;

calculating transmission power of a first uplink physical channeloccurring in the first serving cell in a first time unit; and

calculating transmission power of a second uplink physical channeloccurring in the second serving cell in a second time unit.

-   (17)

A communication method including:

performing wireless communication;

setting, by a processor, a first serving cell and a second serving cellwith different sub frame lengths;

setting a first unit time for calculating transmission power of a firstuplink physical channel occurring in the first serving cell; and

setting a second unit time for calculating transmission power of asecond uplink physical channel occurring in the second serving cell.

-   (18)

A program causing a computer to:

perform wireless communication;

allocate power for communication between a first serving cell and asecond serving cell with different sub frame lengths;

calculate transmission power of a first uplink physical channeloccurring in the first serving cell in a first time unit; and

calculate transmission power of a second uplink physical channeloccurring in the second serving cell in a second time unit.

-   (19)

A program causing a computer to:

perform wireless communication;

set a first serving cell and a second serving cell with different subframe lengths;

set a first unit time for calculating transmission power of a firstuplink physical channel occurring in the first serving cell; and

set a second unit time for calculating transmission power of a seconduplink physical channel occurring in the second serving cell.

-   1 base station device-   101 higher layer processing unit-   103 control unit-   105 receiving unit-   1051 decoding unit-   1053 demodulating unit-   1055 demultiplexing unit-   1057 wireless receiving unit-   1059 channel measuring unit-   107 transmitting unit-   1071 encoding unit-   1073 modulating unit-   1075 multiplexing unit-   1077 wireless transmitting unit-   1079 link reference signal generating unit-   109 transceiving antenna-   130 network communication unit-   2 terminal device-   201 higher layer processing unit-   203 control unit-   205 receiving unit-   2051 decoding unit-   2053 demodulating unit-   2055 demultiplexing unit-   7057 wireless receiving unit-   2059 channel measuring unit-   207 transmitting unit-   2071 encoding unit-   2073 modulating unit-   2075 multiplexing unit-   27077 wireless transmitting unit-   2079 link reference signal generating unit-   209 transceiving antenna

1. A terminal device comprising: a communication unit configured toperform wireless communication; and a control unit configured toallocate power for communication between a first serving cell and asecond serving cell with different sub frame length, wherein the controlunit calculates transmission power of a first uplink physical channeloccurring in the first serving cell in a first time unit, and calculatestransmission power of a second uplink physical channel occurring in thesecond serving cell in a second time unit.
 2. The terminal deviceaccording to claim 1, wherein the first time unit and the second timeunit are set to be substantially equal values.
 3. The terminal deviceaccording to claim 2, wherein the first time unit and the second timeunit are set to be substantially equal to a sub frame length of LongTerm Evolution (LTE).
 4. The terminal device according to claim 2,wherein the first time unit and the second time unit are set to besubstantially equal to a maximum value between a sub frame length in thefirst serving cell and a sub frame length in the second serving cell. 5.The terminal device according to claim 1, wherein the first time unitand the second time unit are set to be mutually different values.
 6. Theterminal device according to claim 5, wherein the first time unit is setto be substantially equal to a sub frame length in the first servingcell, and the second time unit is set to be substantially equal to a subframe length in the second serving cell.
 7. The terminal deviceaccording to claim 5, wherein the first time unit is set to besubstantially equal to a period at which the first uplink physicalchannel occurs, and the second time unit is set to be substantiallyequal to a period at which the second uplink physical channel occurs. 8.The terminal device according to claim 5, wherein the second time unitis an integer multiple of the first time unit.
 9. The terminal deviceaccording to claim 8, wherein the first serving cell and the secondserving cell belong to a same cell group, the first uplink physicalchannel overlaps the second uplink physical channel on a time axis, andin a case in which a third uplink physical channel which furtheroverlaps the first uplink physical channel on the time axis and occursin the second serving cell occurs after the second uplink physicalchannel, a first scaling factor by which the first uplink physicalchannel and the second uplink physical channel are multiplied and asecond scaling factor by which the third uplink physical channel ismultiplied are individually decided.
 10. The terminal device accordingto claim 9, wherein the first scaling factor is decided within a rangein which a value obtained by multiplying a sum of transmission powerbetween the first uplink physical channel and the second uplink physicalchannel by the first scaling factor does not exceed maximum uplinktransmission power.
 11. The terminal device according to claim 9,wherein the second scaling factor is decided within a range in which avalue obtained by multiplying transmission power of the third uplinkphysical channel by the second scaling factor does not exceed a valueobtained by subtracting a value obtained by multiplying the transmissionpower of the first uplink physical channel by the first scaling factorfrom maximum uplink transmission power.
 12. The terminal deviceaccording to claim 5, wherein the first serving cell and the secondserving cell belong to a same cell group, the first uplink physicalchannel overlaps the second uplink physical channel on a time axis, andin a case in which a third uplink physical channel which overlaps thefirst uplink physical channel on the time axis and occurs in the secondserving cell occurs after the second uplink physical channel, each ofthe first uplink physical channel, the second uplink physical channel,and the third uplink physical channel is multiplied by a common scalingfactor.
 13. The terminal device according to claim 12, wherein thescaling factor is decided within a range in which a value obtained bymultiplying a sum of the transmission power of the first uplink physicalchannel and a maximum value between the transmission power of the seconduplink physical channel and transmission power of the third uplinkphysical channel by the scaling factor does not exceed maximum uplinktransmission power.
 14. The terminal device according to claim 12,wherein the scaling factor is decided within a range in which a valueobtained by multiplying a maximum value between a sum of thetransmission power of the first uplink physical channel and thetransmission power of the second uplink physical channel and a sum ofthe transmission power of the first uplink physical channel andtransmission power of the third uplink physical channel by the scalingfactor does not exceed maximum uplink transmission power.
 15. A basestation device comprising: a communication unit configured to performwireless communication; and a control unit configured to set a firstserving cell and a second serving cell with different sub frame lengths,wherein the control unit sets a first unit time for calculatingtransmission power of a first uplink physical channel occurring in thefirst serving cell, and sets a second unit time for calculatingtransmission power of a second uplink physical channel occurring in thesecond serving cell.
 16. A communication method comprising: performingwireless communication; allocating, by a processor, power forcommunication between a first serving cell and a second serving cellwith different sub frame lengths; calculating transmission power of afirst uplink physical channel occurring in the first serving cell in afirst time unit; and calculating transmission power of a second uplinkphysical channel occurring in the second serving cell in a second timeunit.
 17. A communication method comprising: performing wirelesscommunication; setting, by a processor, a first serving cell and asecond serving cell with different sub frame lengths; setting a firstunit time for calculating transmission power of a first uplink physicalchannel occurring in the first serving cell; and setting a second unittime for calculating transmission power of a second uplink physicalchannel occurring in the second serving cell.
 18. A program causing acomputer to: perform wireless communication; allocate power forcommunication between a first serving cell and a second serving cellwith different sub frame lengths; calculate transmission power of afirst uplink physical channel occurring in the first serving cell in afirst time unit; and calculate transmission power of a second uplinkphysical channel occurring in the second serving cell in a second timeunit.
 19. A program causing a computer to: perform wirelesscommunication; set a first serving cell and a second serving cell withdifferent sub frame lengths: set a first unit time for calculatingtransmission power of a first uplink physical channel occurring in thefirst serving cell; and set a second unit time for calculatingtransmission power of a second uplink physical channel occurring in thesecond serving cell.